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High voltage experiments (tinfoil hat owners only)
Posted: Wed Jul 22, 2015 7:54 pm
by vlad01
Looking at getting these for a project, but is it really 12000 minimum order lol?
http://au.mouser.com/ProductDetail/Rect ... %252bfc%3d
Also anyone have an account and is so is it possible I could get some diodes added for me with an order?
Re: Buying from mouser?
Posted: Wed Jul 22, 2015 9:33 pm
by Tazzi
Ouch, mouser isnt normally too bad.
tried looking over at rs-online yet? I purchase from there now as it super fast, and competitively priced.
Is that the exact product you need? Or is there some flexibility? Heres a link to the rectifiers part list:
http://au.rs-online.com/web/c/semicondu ... ky-diodes/
Re: Buying from mouser?
Posted: Wed Jul 22, 2015 10:11 pm
by vlad01
looked at those sites but they dont have high voltage diodes. I need the highest possible ones available without costing a fortune. Trying to nut out a combo of price vs quantity of stings of diodes to get my goal of 50kv reverse voltage, current isn't so much an issue as Im dealing with singular mA range or less.
I want to get back into high voltage experiments as I haven't done that in years and been playing with some of the stuff I made years ago which is all baby few 10s of Kv stuff.
Looking at making a nice Cockcroft-Walton generator. Lots of good military stock door knob capacitors. Found some 50Kv 2200Pf caps
The microwave rectifier diodes are whats on that link, 16Kv, common ones are 12Kv but when you need 80 of them the price is a bit much knowing it may not even work as they could fail, caps wont fail so Im not worried there. There are packs you can buy for a few bob on ebay from china but yeah I don't think they would even work? being china made and all.
Re: Buying from mouser?
Posted: Thu Jul 23, 2015 8:26 am
by Jayme
ive got a few laying around.... along with the high voltage caps dug out of microwaves from the tip
they get loads there.
Re: Buying from mouser?
Posted: Thu Jul 23, 2015 10:14 am
by Tazzi
Jayme wrote:ive got a few laying around.... along with the high voltage caps dug out of microwaves from the tip
they get loads there.
Sounds like you were that crazy guy with tin foil on your head, pulling microwaves apart
Haha, nah, actually really good idea!
Re: Buying from mouser?
Posted: Thu Jul 23, 2015 2:39 pm
by Circlotron
If you have a paypal account then this site looks good ->
http://hvstuff.com/
Re: Buying from mouser?
Posted: Thu Jul 23, 2015 6:48 pm
by vlad01
Re: Buying from mouser?
Posted: Thu Jul 23, 2015 6:49 pm
by vlad01
Tazzi wrote:Jayme wrote:ive got a few laying around.... along with the high voltage caps dug out of microwaves from the tip
they get loads there.
Sounds like you were that crazy guy with tin foil on your head, pulling microwaves apart
Haha, nah, actually really good idea!
Yeah I had heaps of microwave stuff but its all pretty low voltage and not very tolerance when things are cranked up a little. Only 2.2Kv most of it.
Re: Buying from mouser?
Posted: Fri Jul 24, 2015 12:51 am
by j_ds_au
I thought you didn't trust Chinese suppliers?
If it's low frequency, you could string 100 1N5062's together.
Joe.
Re: Buying from mouser?
Posted: Fri Jul 24, 2015 8:17 pm
by vlad01
I generally dont, but those exact diodes are only available from china. Far as I know others using the same ones in their projects havn't had any issue. Just hate ebay 10 lot for a buck china stuff which is what those microwave diodes are like on ebay. More than likely counterfeits of genuine good quality china items.
I plan to run pretty high frequency, about 10-20KHz. Stringing lots of little diodes has little success due to flash over and cascade failures. Seen heaps of youtube video of strings like than in the CW generator, lots of the videos end in a whole string burning up. Can run a limiting resistor in series but it all gets messy when you have at least 1000 diodes to solder together, and very expensive!