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 > Buy, Sell, & Trade



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



Reply
 
LinkBack Thread Tools Display Modes
Old 03-22-2010, 07:44 PM #1
Razako's Avatar
Class 3B Laser
 
Join Date: Mar 2006
Location: Utah
Posts: 4,373
Rep Power: 24102
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Razako Razako is online now
Class 3B Laser
Razako's Avatar
 
Join Date: Mar 2006
Location: Utah
Posts: 4,373
Rep Power: 24102
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Default Selling 3.5kv 50uf maxwell energy discharge cap

Not a laser I know, but it's still pretty cool. For those who don't know this cap can be used to blow up fruit and explode things like wires/tinfoil strips. It's really quite awesome seeing a thin strip of tinfoil or wire vanish in flash of blue light with a thunderous bang louder than most firecrackers. Also when shorted through a typical diode it literally blows the thing to bits. See youtube for videos of HV caps exploding stuff. This thing also has a ton of interesting HV applications if you aren't interested in blowing stuff up. Possible uses in VT tesla coils, radar?, anything requiring Filtered HV DC.

This is a big maxwell labs energy discharge cap rated at 3.5KV 50uf. I've discharged it about 20 times blowing fruit and stuff up with no ill effect on it. Measured it with my multimeter and it showed 48.0uf. It can be yours for $75 (or best offer) shipped assuming that you live in the US. This is a great price compared to what you'll find similar caps on ebay for. I'm selling it cause after having some fun with it it's sat in my closet for like a year unused. Pm me with offers if you want it.

!!!WARNING!!! Do NOT buy this if you don't know how to safely charge, use and discharge this cap. General high voltage knowledge required. If you screw up with this YOU WILL BE DEAD in the blink of an eye! Also eye/hearing protection should be used if you blow stuff up with it.

Pics:




__________________


Last edited by Razako; 03-22-2010 at 07:57 PM.
Razako is online now   Reply With Quote







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







Old 03-23-2010, 12:01 AM #2
GoRdOn_B's Avatar
Class 2M Laser
 
Join Date: Jul 2008
Location: Slut Lake
Posts: 663
Rep Power: 31
GoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant future
GoRdOn_B GoRdOn_B is offline
Class 2M Laser
GoRdOn_B's Avatar
 
Join Date: Jul 2008
Location: Slut Lake
Posts: 663
Rep Power: 31
GoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant futureGoRdOn_B has a brilliant future
Default Re: Selling 3.5kv 50uf maxwell energy discharge cap

This has got to be the scariest thing i have ever seen FS here..

*Hats off to you good Sir
__________________
~Forget the Tv... I'd rather Hit the Streets & do Graffiti.
GoRdOn_B is offline   Reply With Quote
Old 03-23-2010, 12:09 AM #3
Hemlock_Mike's Avatar
Class 4 Laser
 
Join Date: Jan 2007
Location: North Iowa
Posts: 6,184
Rep Power: 3654
Hemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond repute
Hemlock_Mike Hemlock_Mike is online now
Class 4 Laser
Hemlock_Mike's Avatar
 
Join Date: Jan 2007
Location: North Iowa
Posts: 6,184
Rep Power: 3654
Hemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond reputeHemlock_Mike has a reputation beyond repute
Default Re: Selling 3.5kv 50uf maxwell energy discharge cap

Consider keeping a 10 MegOhm or less resistor across that beast as a bleeder resistor.
That is a bad news cap.

HMike
__________________
It's a dog's life
Hemlock_Mike is online now   Reply With Quote
Old 03-23-2010, 12:22 AM #4
Razako's Avatar
Class 3B Laser
 
Join Date: Mar 2006
Location: Utah
Posts: 4,373
Rep Power: 24102
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Razako Razako is online now
Class 3B Laser
Razako's Avatar
 
Join Date: Mar 2006
Location: Utah
Posts: 4,373
Rep Power: 24102
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Default Re: Selling 3.5kv 50uf maxwell energy discharge cap

Quote:
Originally Posted by Hemlock_Mike View Post
Consider keeping a 10 MegOhm or less resistor across that beast as a bleeder resistor.
That is a bad news cap.

HMike
I had one back when I was actually using this thing. Even after letting it sit for a while unused I'll quickly cross a screwdriver over the terminals just to make sure. Some caps are weird and can rebuild a charge somehow just sitting around. Fortunately this one doesn't seem to do that. You can never be TOO paranoid with these big scary capacitors.

Btw fully charged to 3.5kv this packs 306 joules of energy. A typical camera flash cap contains like 7. That should give you an idea of what this thing can do.
__________________


Last edited by Razako; 03-23-2010 at 12:34 AM.
Razako is online now   Reply With Quote
Old 03-23-2010, 04:16 AM #5
HaloBlu's Avatar
Class 3R Laser
 
Join Date: Dec 2009
Location: 11.69,143.70
Posts: 1,327
Rep Power: 48
HaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond repute
HaloBlu HaloBlu is offline
Class 3R Laser
HaloBlu's Avatar
 
Join Date: Dec 2009
Location: 11.69,143.70
Posts: 1,327
Rep Power: 48
HaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond reputeHaloBlu has a reputation beyond repute
Default Re: Selling 3.5kv 50uf maxwell energy discharge cap

I know I would be uneasy selling that to anyone unless I was sure the buyer had high voltage experience.
__________________
«Hålø» Openwrt Piranha! Debian on DockStar. 405nm=Crack 445=CrystalMeth RGB=Ecstasy
Custom PCB GB . .Raspberry Pi $25 PC
'If it doesn't burn a hole in the wall then it's okay for my eyes.' *cute little smile* . .Buy Goggles! OEM, Survival
.
HaloBlu is offline   Reply With Quote
Old 03-24-2010, 02:49 AM #6
Banned
 
Join Date: Feb 2010
Location: California
Posts: 119
Rep Power: 0
Laserz4sale will become famous soon enough
Laserz4sale Laserz4sale is offline
Banned
 
Join Date: Feb 2010
Location: California
Posts: 119
Rep Power: 0
Laserz4sale will become famous soon enough
Default Re: Selling 3.5kv 50uf maxwell energy discharge cap

Quote:
Originally Posted by Razako View Post
I had one back when I was actually using this thing. Even after letting it sit for a while unused I'll quickly cross a screwdriver over the terminals just to make sure. Some caps are weird and can rebuild a charge somehow just sitting around. Fortunately this one doesn't seem to do that. You can never be TOO paranoid with these big scary capacitors.

Btw fully charged to 3.5kv this packs 306 joules of energy. A typical camera flash cap contains like 7. That should give you an idea of what this thing can do.
Dont use a screw driver. Just throw steel wool over it. the most it can do is light the steel wool up. It will stop burning after a while...
But capacitors dont Charge by themselves. Its not possible. Or the world could have a huge 100terrafarad capacitor and leave it there. Then after a while, it will have enough power to power the world

Last edited by Laserz4sale; 03-24-2010 at 02:59 AM.
Laserz4sale is offline   Reply With Quote
Old 03-24-2010, 03:28 AM #7
Banned
 
Join Date: Mar 2008
Location: Austin TX
Posts: 1,341
Rep Power: 0
potatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond repute
potatorage potatorage is offline
Banned
 
Join Date: Mar 2008
Location: Austin TX
Posts: 1,341
Rep Power: 0
potatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond reputepotatorage has a reputation beyond repute
Default Re: Selling 3.5kv 50uf maxwell energy discharge cap

They don't charge themselves but sometimes they aren't fully discharged.
potatorage is offline   Reply With Quote
Old 03-24-2010, 04:48 AM #8
JLSE's Avatar
A.R Coated Madman
 
Join Date: Dec 2007
Location: ɯɐǝq ssɐ-ǝʇıɹq ǝɥʇ puıɥǝq
Posts: 3,587
Rep Power: 716
JLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond repute
JLSE JLSE is offline
A.R Coated Madman
JLSE's Avatar
 
Join Date: Dec 2007
Location: ɯɐǝq ssɐ-ǝʇıɹq ǝɥʇ puıɥǝq
Posts: 3,587
Rep Power: 716
JLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond reputeJLSE has a reputation beyond repute
Default Re: Selling 3.5kv 50uf maxwell energy discharge cap

Its called dielectric absorption or for old timers 'soakage' IIRC.

Typical in old high voltage caps. Oil filled and paper being the notorious ones of the bunch.
__________________
Recent Projects:
-----

Last edited by JLSE; 03-24-2010 at 04:50 AM.
JLSE is offline   Reply With Quote
Old 03-24-2010, 06:30 AM #9
Razako's Avatar
Class 3B Laser
 
Join Date: Mar 2006
Location: Utah
Posts: 4,373
Rep Power: 24102
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Razako Razako is online now
Class 3B Laser
Razako's Avatar
 
Join Date: Mar 2006
Location: Utah
Posts: 4,373
Rep Power: 24102
Razako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond reputeRazako has a reputation beyond repute
Default Re: Selling 3.5kv 50uf maxwell energy discharge cap

Quote:
Originally Posted by wannaburn View Post
Its called dielectric absorption or for old timers 'soakage' IIRC.

Typical in old high voltage caps. Oil filled and paper being the notorious ones of the bunch.
Thank you. They can indeed regenerate a charge depending on the cap.
__________________

Razako is online now   Reply With Quote
Old 03-25-2010, 06:11 AM #10
ossumguywill's Avatar
Class 3R Laser
 
Join Date: Jul 2008
Posts: 2,138
Rep Power: 55
ossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond repute
Send a message via AIM to ossumguywill Send a message via Skype™ to ossumguywill
ossumguywill ossumguywill is offline
Class 3R Laser
ossumguywill's Avatar
 
Join Date: Jul 2008
Posts: 2,138
Rep Power: 55
ossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond reputeossumguywill has a reputation beyond repute
Send a message via AIM to ossumguywill Send a message via Skype™ to ossumguywill
Default Re: Selling 3.5kv 50uf maxwell energy discharge cap

I found a SWEET electronics warehouse where I'm moving, and they have boxes full of HUGE caps, and I'm sure some are like this. It's literally like 20,000 square feet of small electronic components. This includes, of course, lots of LM317s and laser stuff. I almost picked some up, but I got a new solder tip instead. Maybe I'll build a fruit exploder with some capacitors like that
ossumguywill 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 12:09 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