[CLOSED] WTB: Power supply for 2214-40MLA argon

[paul1598419]

Re: WTB: Power supply for 2214-40MLA argon

https://www.amazon.ca/Potentiometer...d=1471202628&sr=8-6&keywords=potentiometer+5k

5pcs 5K OHM 3 Terminal Linear Taper Rotary Volume B Type Potentiometer POT White | eBay

10 PCS 5K OHM Linear Taper Rotary Potentiometer Panel POT B5K 15mm | eBay

Any one of those will work fine. Local electronics store might have them depending on what sort of electronics stores you have nearby.

10K will work fine too.

Don't think I've ever seen a pot labeled as a linear taper volume control before. They are logarithmic by nature, as is our hearing.

 

[Sta]

Re: WTB: Power supply for 2214-40MLA argon

I think the controller is the problem!
I was able to increase power output by connecting 1/3, 5/22, then starting using 13/14. Next I connected 6/24 to 4.35 volts DC. At that point I saw a significant increase in power. However, after I disconnected the DC power to 6/24, the laser stopped emitting.

 

[Sta]

Re: WTB: Power supply for 2214-40MLA argon

At this point I'm pretty sure the controller is at fault. Using an improvised method I achieved 8.5A and 9 lines. I still don't know why the starter is having such a problem, but getting it to run at 61mW seems to indicate that the power supply isn't bad.

 

[diachi]

Re: WTB: Power supply for 2214-40MLA argon

At this point I'm pretty sure the controller is at fault. Using an improvised method I achieved 8.5A and 9 lines. I still don't know why the starter is having such a problem, but getting it to run at 61mW seems to indicate that the power supply isn't bad.

High tube pessure would explain the starter issue - sometimes it takes a few tries to start with high pressure. Probably needs a good long run.

 

[Sta]

Re: WTB: Power supply for 2214-40MLA argon

That's what I did yesterday, and I'm getting a marked improvement in startup attempts. Yesterday it probably took 30-40, today it just took 4 or 5 (both times!) So I'm pretty sure the controller is bad. I hope I am able to return it.

 

[diachi]

Re: WTB: Power supply for 2214-40MLA argon

That's what I did yesterday, and I'm getting a marked improvement in startup attempts. Yesterday it probably took 30-40, today it just took 4 or 5 (both times!) So I'm pretty sure the controller is bad. I hope I am able to return it.

That's a lot of start attempts ... not good for the cathode. That's a good sign that it has come down though. Hopefully you can get it starting first time ever time.

 

[ultimatekaiser]

Re: WTB: Power supply for 2214-40MLA argon

yeah the uniphase tubes come back pretty easy, They do end up with pressure issues, but nowhere near like larger ones. and only when they're old. mine sits alot, but always comes on first time, even after 6 months of sitting.

I still don't think that the controller is the issue. but it's possible yours has an oddball power supply pinout for whatever reason? Just because the HV section works doesn't mean the supply is 'working' as it should. I have several that 'work' but not normally. speaking of which, you ARE counting pins from the right side of the port not the left side right? as it starts on the upper right and counts to the left. (e.g. 10 9 8 7 6 5 4 3 3 2 1) not the other way. I don't think anyone mentioned that before now

 

[diachi]

Re: WTB: Power supply for 2214-40MLA argon

yeah the uniphase tubes come back pretty easy, They do end up with pressure issues, but nowhere near like larger ones. and only when they're old. mine sits alot, but always comes on first time, even after 6 months of sitting.

I still don't think that the controller is the issue. but it's possible yours has an oddball power supply pinout for whatever reason? Just because the HV section works doesn't mean the supply is 'working' as it should. I have several that 'work' but not normally. speaking of which, you ARE counting pins from the right side of the port not the left side right? as it starts on the upper right and counts to the left. (e.g. 10 9 8 7 6 5 4 3 3 2 1) not the other way. I don't think anyone mentioned that before now

Pins are usually numbered on these - at the least pins 1, 13, 14 and 25 are usually numbered. Can work it out from there without any explanation...

 

[Sta]

Re: WTB: Power supply for 2214-40MLA argon

All of the pins are numbered. It's counting from right to left.

 

[ultimatekaiser]

Re: WTB: Power supply for 2214-40MLA argon

Pins are usually numbered on these - at the least pins 1, 13, 14 and 25 are usually numbered. Can work it out from there without any explanation...

All of the pins are numbered. It's counting from right to left.

yeah, usually they are, but not always. It had just occurred to me so I was just checking. as I've been guilty of this once or twice.

I just checked my analog controller by LSI and it has 1-3 bridged. 2 goes to the middle of the on/off switch. which if off goes to 13, and if on goes goes to the run switch, as well as the on diode, and ends at pin 14. all other pins aside.

 

[diachi]

Re: WTB: Power supply for 2214-40MLA argon

FYI this is the controller I mentioned earlier - linked to on the FAQ:

http://www.repairfaq.org/sam/kccucp1.pdf

That's a pretty much complete controller with all the functions you could need.

 

[ultimatekaiser]

Re: WTB: Power supply for 2214-40MLA argon

That's interesting. It looks way more needlessly complex than mine at a glance. Mine doesn't have any ICs on it or all those switches...mine just has a whopping 3 switches 2 pots an led and two resistors and a few test points. its very simple and probably works better using the supply's natural features built into it. no need for any of the other stuff on there. Not that I'm dissing on Kevin, he's a brilliant guy.....but idk why he feels the need for a LM393 comparator set up on there. it works, but I kinda feel like that's overkill.

 

[diachi]

Re: WTB: Power supply for 2214-40MLA argon

That's interesting. It looks way more needlessly complex than mine at a glance. Mine doesn't have any ICs on it or all those switches...mine just has a whopping 3 switches 2 pots an led and two resistors and a few test points. its very simple and probably works better using the supply's natural features built into it. no need for any of the other stuff on there. Not that I'm dissing on Kevin, he's a brilliant guy.....but idk why he feels the need for a LM393 comparator set up on there. it works, but I kinda feel like that's overkill.

You can remove much of that schematic if you don't need the features - comparator only turns on the emission LED when tube current is present - that's what it's there for. If you hooked it up with just a switch it'd come on as soon as you hit the switch - regardless of if the tube was lit or not.

It's a little redundant I guess? But it lets you know that tube is lit rather than just "you've enabled the tube". I'd probably find it useful for when I forget to open the shutter and sit wondering what's taking so long for emission to start...

 

[ultimatekaiser]

Re: WTB: Power supply for 2214-40MLA argon

You can remove much of that schematic if you don't need the features - comparator only turns on the emission LED when tube current is present - that's what it's there for. If you hooked it up with just a switch it'd come on as soon as you hit the switch - regardless of if the tube was lit or not.

It's a little redundant I guess? But it lets you know that tube is lit rather than just "you've enabled the tube". I'd probably find it useful for when I forget to open the shutter and sit wondering what's taking so long for emission to start...

Point taken. I agree with that, especially as the fan is on anytime these are running anyway, so that kinda doubles as a power LED anyway unless you're deaf

 

[diachi]

Re: WTB: Power supply for 2214-40MLA argon

Point taken. I agree with that, especially as the fan is on anytime these are running anyway, so that kinda doubles as a power LED anyway unless you're deaf

Yeah, hard to forget you have one of these running unless you're in a completely different room. Or as you said, deaf!

 

[ultimatekaiser]

Re: WTB: Power supply for 2214-40MLA argon

Yeah, hard to forget you have one of these running unless you're in a completely different room. Or as you said, deaf!

Very true. Though if you think Cyonics' Argons are loud, you should hear my 643 running. It's like a Jet engine due to having two PAPST TYP6078S 4000RPM fans on it. Something like 206cfm I think each.