Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Drivers, Test-load, Power Supply, & Batteries



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 05-29-2013, 06:58 PM #1
Spectre Gadget's Avatar
Class 1M Laser
 
Join Date: Aug 2012
Location: Houston, Texas, USA
Posts: 116
Rep Power: 174
Spectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond repute
Spectre Gadget Spectre Gadget is offline
Class 1M Laser
Spectre Gadget's Avatar
 
Join Date: Aug 2012
Location: Houston, Texas, USA
Posts: 116
Rep Power: 174
Spectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond repute
Default "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

I know every enthusiast here gets to the point where they want an adjustable power supply to cater to their hobby. Many here also see the mods done to computer power supplies, and the costly purpose-built power supplies on the market. Well, below is my take on the situation.

INTRODUCING: SPECTRE'S BLUE ICE MACHINE!

The photos should indicate where the name came from. It was the first thing that popped in my head after the first 'power up'.




It's really not as complex as you might think, but there are several reasons why I went this route, instead of purchasing one off the bay.

1) I need AMPS. I plan on doing some anodizing here eventually and 1.5-3A DC is not going to cut it.

2) I have PC power supplies come by my desk all the time, when their respective PCs fail.

3) I have a lot of scrap electronics parts that make a project like this very affordable. Buying everything outright is obviously foolhardy.

4) It's a challenge and I like it. Why not?


I wanted to make this thing so it would modify any power supply plugged into it, in case the power supply itself failed. That way the PC power supply became a swappable part, not an integral part of the device. The regulator itself has 8x 15A power transistors providing the final power output, thereby making the limiting factor the PC power supply. Need more output? Upgrade your supply. The one I'm using now is an older 500W supply.

It all started over the course of several years collecting heat sinks, fans, plexiglass, and various components. The original enclosure was some sort of modular tray that went into something else. Either way, it was mostly an empty aluminum box when I got a hold of it. As received, it was a bit too small for the application. I replaced the front, which made it more like a desk drawer instead of an electronics enclosure, with a taller plate of clear plexi, making the entire enclosure taller with a sizeable exhaust vent in the back. The top was cut through the middle, leaving the two side plates and a flange for bolting. The clear plastic made it look great, and allowed for more versatile mounting of fans, controls, etc.

Lots of tedious wiring in the process... Below you can see the two green RSC resistors, which my mistake, were the wrong value.




The next major step was to find a schematic that would work for me. I started off with this one here: 30V 10A Variable Bench Power Supply

I deviated from the original schematic, namely the power transistors. It calls for 2N3055's, which are great but a TO3 package wasn't easy to work with a heatsink. I opted for 2n6488's, which is the same thing in a more modern TO-220 package. below you can see them pasted to my monster copper heatsinks before bolting them down. Another concern was that the tabs on these are tied to the collector of the transistors. Since they were all electrically common, it wasn't a problem that they were together, but I didn't want any potential for them shorting to the case. To fix this, I mounted them on blocks I cut from cutting board material, HDPE.




The HDPE stock was very easy to cut, drill, tap, and work with in general. Plastic will be the new wood some day!


On the electronics, I knew I had to load down each supplied voltage, otherwise I could not get all the potential I could from the power supply, or at worst, fry it. The 12V rail was obviously going to be regulated for the output. The 5V rail was utilized for the auxiliary equipment: all 6 fans, and the volt/current meter (originally). Turns out, 5VDC is excellent for PC fans. They don't spin so fast and are therefore much quieter. No shortage of flow, either. Anyways, the meter had to be powered by a 9V battery eventually, because the isolated power supply didn't work as it should.

The 3.3V rail was really fun. We all know what 3.3V is good for, right? Flashlight power!!! I took a single flashlight driver and powered 6 cyan 1W LEDs for some case lighting. IMO, way better than any ceramic resistor!!!


Here's a shot through the front window...




One of the challenges was how to get the ATX connector to hook up to the machine. On the top of the enclosure I mounted a cut-short riser board from one of the dead servers that came through our door. Not only does it break out the power, but it has several little green LEDs for each power rail. Even though I cut off 2/3 of the original board, it all works just as needed.

Below you can see the picture of how power is delivered to the system. On the back I glued 4x fan pigtails to provide power directly to the final power transistors. They needed more juice than that backplane board could ever hope to provide under heavy load!




I must apologize to the masses, I cannot provide any beamshots with this post. But that doesn't mean we can't see any performance. MAX CURRENT SCOTTY!




Yes, that's correct. 23 FRIGGEN AMPS!!! (output leads shorted together)

As I said before, if you bought everything to build this, it would cost a ridiculous amount of money. As far as buying just the components, the most expensive part was the meter/shunt combo. They go for $25 USD on Ebay. I think the rest was somewhere in the $40 range. Not bad, considering the performance.

The thermal management is way over the top for purpose built, but I got all the copper for free from dead PCs. I did buy all the electronic components new, but the support hardware and mounting blocks were things I collected over a long period of time. I still have leftover surplus from collecting things for this. Heatsink anyone?

I had fun building it, and it looks really cool. Lots of shiny anodizing and copper parts glistening in turquoise light. I hope the community can benefit from my experience, and if not, gain some entertainment from my scrapping and tinkering!
Attached Thumbnails
"Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!-20130403_092201.jpg   "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!-20130403_142306.jpg   "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!-20130401_145120.jpg   "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!-20130529_121243.jpg   "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!-20130327_103217.jpg  

"Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!-20130529_121136.jpg   "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!-20130529_121208.jpg  



Last edited by Spectre Gadget; 09-20-2016 at 10:31 PM. Reason: Stupid ImageShack making my images huge.
Spectre Gadget is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 05-30-2013, 06:50 AM #2
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

Great work! My only complaint is the 9V. You should use a 3V zener diode (cheap and plentiful) to drop the 12V to 9V instead. That, or four regular diodes in series with the meter.

+3
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 05-30-2013, 01:02 PM #3
Spectre Gadget's Avatar
Class 1M Laser
 
Join Date: Aug 2012
Location: Houston, Texas, USA
Posts: 116
Rep Power: 174
Spectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond repute
Spectre Gadget Spectre Gadget is offline
Class 1M Laser
Spectre Gadget's Avatar
 
Join Date: Aug 2012
Location: Houston, Texas, USA
Posts: 116
Rep Power: 174
Spectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

Quote:
Originally Posted by Cyparagon View Post
Great work! My only complaint is the 9V. You should use a 3V zener diode (cheap and plentiful) to drop the 12V to 9V instead. That, or four regular diodes in series with the meter.

+3
That might work, but those meters absolutely require isolated power. If you measure with the same circuit you're recieving power from it could destroy the meter. I'm in complete agreement with you, the 9V battery is really lame.

I did have an isolated power supply module that would not only isolate the power, but jump 5V to 9V. All was working beutifully until the regulator came online. Once I finished the regulator circuit and wired it in, the meter would flash an error code.

Maybe I'll find another module and try again, but at the time I wanted to finish and not wait for another component.

Thanks for the +3!
Spectre Gadget is offline   Reply With Quote
Old 05-30-2013, 01:21 PM #4
ryansoh3's Avatar
Class 3R Laser
 
Join Date: Feb 2012
Location: Pittsburgh
Posts: 1,282
Rep Power: 276
ryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond repute
ryansoh3 ryansoh3 is offline
Class 3R Laser
ryansoh3's Avatar
 
Join Date: Feb 2012
Location: Pittsburgh
Posts: 1,282
Rep Power: 276
ryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond reputeryansoh3 has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

This is pretty epic, great job! +1

The ATX PSU won't shut down even if the final output leads are shorted?
__________________
Is your laser a BAMF?

With great power comes a great need for safety.

I am SICK of spoon feeding noobs who just don't care to search the forum.

Lasers:
405nm Amazon Set
445nm BAMF Link
445nm 2358mW Peak The Bushwhacker by Dogs Best Friend
445nm Fantasy Link
532nm "200mW" DealExtreme Pointer
532nm Amazon Set
650nm Amazon Set
FastTech is the new DX. (Nope, prices have gone up, nevermind!)

ryansoh3 is offline   Reply With Quote
Old 05-30-2013, 01:42 PM #5
djQUAN's Avatar
Class 3R Laser
 
Join Date: May 2013
Location: Philippines
Posts: 1,128
Rep Power: 559
djQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond repute
Send a message via Yahoo to djQUAN
djQUAN djQUAN is offline
Class 3R Laser
djQUAN's Avatar
 
Join Date: May 2013
Location: Philippines
Posts: 1,128
Rep Power: 559
djQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond reputedjQUAN has a reputation beyond repute
Send a message via Yahoo to djQUAN
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

He used an LM723 based circuit which has built in current limiting. Looks like the ATX can supply enough current when the LM723 goes into constant current mode.
djQUAN is offline   Reply With Quote
Old 05-30-2013, 02:09 PM #6
Wolfman29's Avatar
Class 3B Laser
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Wolfman29 Wolfman29 is offline
Class 3B Laser
Wolfman29's Avatar
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

This is really cool! You know, at one point I made something similar to this... but that was just a single LM1083 with a huge pot attached to it xD You're looks like a really well done, professional job! AND it can provide 20+A? That's incredible!

+as many as I can
Wolfman29 is offline   Reply With Quote
Old 05-30-2013, 02:41 PM #7
csshih's Avatar
Class 2 Laser
 
Join Date: Sep 2010
Location: San Jose, CA
Posts: 431
Rep Power: 219
csshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond repute
csshih csshih is offline
Class 2 Laser
csshih's Avatar
 
Join Date: Sep 2010
Location: San Jose, CA
Posts: 431
Rep Power: 219
csshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond reputecsshih has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

that looks great!
only 23 amps? you can do better
csshih is offline   Reply With Quote
Old 05-30-2013, 02:57 PM #8
BShanahan14rulz's Avatar
Class 3B Laser
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
BShanahan14rulz BShanahan14rulz is offline
Class 3B Laser
BShanahan14rulz's Avatar
 
Join Date: Dec 2009
Posts: 3,175
Rep Power: 264
BShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond reputeBShanahan14rulz has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

Those are some fucking beautiful solid copper heatsinks! No solder for these fins!

Oh, and the PSU is nice too.

Thanks especially for taking the time to share with us :-)
BShanahan14rulz is offline   Reply With Quote
Old 05-30-2013, 03:34 PM #9
Banned
 
Join Date: May 2013
Location: Adelaide, Australia
Posts: 596
Rep Power: 0
tonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond repute
tonyt tonyt is offline
Banned
 
Join Date: May 2013
Location: Adelaide, Australia
Posts: 596
Rep Power: 0
tonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond reputetonyt has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

Wow. Thats beautiful! +++1!
tonyt is offline   Reply With Quote
Old 05-30-2013, 04:17 PM #10
TheDukeAnumber1's Avatar
Class 3R Laser
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
TheDukeAnumber1 TheDukeAnumber1 is offline
Class 3R Laser
TheDukeAnumber1's Avatar
 
Join Date: Jun 2012
Location: Illinois
Posts: 2,045
Rep Power: 2270
TheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond reputeTheDukeAnumber1 has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

That's pretty sweet, putting those ebay supplies to shame.
__________________
“Absence of evidence isn't evidence of absence."
http://laserpointerforums.com/donations.htm
[SIZE="1"]“It is impossible that any ill should happen to the man who is beloved of the Lord; the most crushing calamities can only shorten his journey and hasten him to his reward. Ill to him is no ill, but only good in a mysterious form. Losses enrich him, sickness is his medicine, reproach is his honour, death is his gain. No evil in the strict sense of the word can happen to him, for everything is overruled for good. Happy is he who is in such a case. He is secure where others are in peril, he lives where others die.”—Spurgeon
TheDukeAnumber1 is offline   Reply With Quote
Old 05-30-2013, 05:32 PM #11
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

I don't think the grounds need to be isolated. I'm sure there's a way to fudge it with just a few diodes. I'll play around and let you know what I find.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 05-31-2013, 01:31 PM #12
Spectre Gadget's Avatar
Class 1M Laser
 
Join Date: Aug 2012
Location: Houston, Texas, USA
Posts: 116
Rep Power: 174
Spectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond repute
Spectre Gadget Spectre Gadget is offline
Class 1M Laser
Spectre Gadget's Avatar
 
Join Date: Aug 2012
Location: Houston, Texas, USA
Posts: 116
Rep Power: 174
Spectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

Quote:
Originally Posted by Cyparagon View Post
I don't think the grounds need to be isolated. I'm sure there's a way to fudge it with just a few diodes. I'll play around and let you know what I find.
Yeah, play around and let me know. I was really curious as to what these power modules have in them that would make them 'isolated'. Needless to say, the Chinese-translated-English instructions didn't elaborate very deeply.

One thing is for sure: simply taking another voltage from the PS (apart from what you are measuring) is not enough.

EDIT: From what I've been reading thus far, it seems like a common ground causes the problems. And then there's this:

http://www.thebackshed.com/windmill/...PanelMeter.asp

This article is very interesting because they are using *almost* the same isolation module as I am. They are using a Valor PM7202, mine are Valor PM6078's. Both models do 5V to 9V, and are utilized on network cards. Fortunately for this guy he found the datasheet for his. The big question is how it is implemented: he is measuring a 12VDC circuit, applies a regulator to drop 12VDC to 5VDC, a couple of filtering caps, then his isolation module. I wonder if it is a filtering issue I'm experiencing?

Last edited by Spectre Gadget; 05-31-2013 at 02:29 PM. Reason: Additional Info...
Spectre Gadget is offline   Reply With Quote
Old 06-02-2013, 06:09 AM #13
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

The little panel meter I tried can actually measure its own supply rail, so I can't really try to fix it if it's not broken
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 06-04-2013, 12:10 PM #14
Spectre Gadget's Avatar
Class 1M Laser
 
Join Date: Aug 2012
Location: Houston, Texas, USA
Posts: 116
Rep Power: 174
Spectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond repute
Spectre Gadget Spectre Gadget is offline
Class 1M Laser
Spectre Gadget's Avatar
 
Join Date: Aug 2012
Location: Houston, Texas, USA
Posts: 116
Rep Power: 174
Spectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

I'm starting to think it may be a fubar module. I bought three, so I'll probably swap it out. From looking at these datasheets, I can't really see what the problem could be, other than bad unit.
Spectre Gadget is offline   Reply With Quote
Old 06-04-2013, 04:56 PM #15
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,144
Rep Power: 9321
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

How does it behave when powered by the 5V rail instead?
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 06-10-2013, 02:27 PM #16
Spectre Gadget's Avatar
Class 1M Laser
 
Join Date: Aug 2012
Location: Houston, Texas, USA
Posts: 116
Rep Power: 174
Spectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond repute
Spectre Gadget Spectre Gadget is offline
Class 1M Laser
Spectre Gadget's Avatar
 
Join Date: Aug 2012
Location: Houston, Texas, USA
Posts: 116
Rep Power: 174
Spectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond reputeSpectre Gadget has a reputation beyond repute
Default Re: "Blue Ice Machine" Adjustable Power Supply Mod for PC Power Supplies!

Quote:
Originally Posted by Cyparagon View Post
How does it behave when powered by the 5V rail instead?
Tell you the truth, I don't want to try that. That would clearly put the meter at common ground, with a high potential for damage. Besides that, the meter needs more than 5VDC to run properly. I wish I didn't throw away the instructions...

I need to get that thing out and swap the modules to really know for sure. I've just been busy lately finishing my computer desk before I go back to school.
Spectre Gadget is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 09:29 AM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC