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Registered Member #3616
Joined: Fri Jan 14 2011, 08:47PM
Location:
Posts: 34
Greets!
I want to run a full wave rectifier from my 35KV potential transformer to charge a bank of five 50KV capacitors in a Marx configuration. Currently I am doing so with a single chain of diodes, but this only offers 18KV to the bank, so I need a full wave rectifier. I am only running at 60Hz, so fast recovery is not necessary.
I have seen the 1N4007 series projects, but found a 4000v diode for almost the same price (100 pieces for $30.00)...
My plan is to make up 4 chains of 15 series diodes and then solder the 4 chains into a large full wave rectifier (60 diodes used in total). This should offer a rectifier capable of taking 60KV. Has anyone done this with success? Could there be a cheaper way to do this?
Registered Member #2919
Joined: Fri Jun 11 2010, 06:30PM
Location: Cambridge, MA
Posts: 652
Oneironaut wrote ...
Greets!
I want to run a full wave rectifier from my 35KV potential transformer to charge a bank of five 50KV capacitors in a Marx configuration. Currently I am doing so with a single chain of diodes, but this only offers 18KV to the bank, so I need a full wave rectifier. I am only running at 60Hz, so fast recovery is not necessary.
I have seen the 1N4007 series projects, but found a 4000v diode for almost the same price (100 pieces for $30.00)...
My plan is to make up 4 chains of 15 series diodes and then solder the 4 chains into a large full wave rectifier (60 diodes used in total). This should offer a rectifier capable of taking 60KV. Has anyone done this with success? Could there be a cheaper way to do this?
Thanks, Brad
Halfwave rectification should allow for the same peak voltages, so I don't see the problem here...
Registered Member #3616
Joined: Fri Jan 14 2011, 08:47PM
Location:
Posts: 34
I guess my DC HV meter is reading only 18KV then due to the 30Hz chopped DC output...
Maybe I will charge up a cap and see if it reaches the 30KV level. I know there is going to be losses with a half wave rectifier, but I could live with a few KV missing.
But for $30, why not just build a full wave rectifier? That's my thinking. At 60Hz, the Marx will charge at twice the speed.
I got 1000 for $13 on eBay the hardest part is picking them all up when your brother nocks them off the table it looks like a sea of small black insects
Registered Member #4118
Joined: Mon Oct 03 2011, 04:50PM
Location: MD
Posts: 140
Destroyer of mosfets wrote ...
I got 1000 for $13 on eBay the hardest part is picking them all up when your brother nocks them off the table it looks like a sea of small black insects
If you buy them from mouser, they will come on cut tape.
Registered Member #3616
Joined: Fri Jan 14 2011, 08:47PM
Location:
Posts: 34
Thanks, that is a good deal. Much less painful (on the budget) when things go wrong and you are picking the little plastic bits out of the ceiling tiles!
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50KV Full Wave Bridge
