Bridge Rectifier Q

disneyjoe7

If I would rectify 120vac to get 150-170vdc, could I do another rectifier to get 300 to 340vdc under load?

FTGV

What your looking for is a voltage multiplier circuit.http://en.wikipedia.org/wiki/Voltage_multiplier

disneyjoe7

Not enough current, may need 300+ watts.

megasat16

Why isn't enough current? You would only need about an amp for 300W+ at 300V.

You can use the simple, cheap and effective DC step up from Fred link or you can use DC to DC Converter. The caps at high voltage may be a bit costly if you want to have high current supply. Or you can use a small step up AC transformer and then rectify to DC. It's probably cheaper and easier with the AC transformer.

http://en.wikipedia.org/wiki/DC_to_DC_converter

ben62670

Don't rectify 120vac without a transformer.

megasat16

Ben said it right. And I'll add to what he said. Don't do it without a proper rating fuse too.

disneyjoe7

This for a HHO Hydrogen idea I have to run my 4Runner on. I was thinking of using a 12vdc inverter to 120vac then rectified to 170vdc. I need to run some test first, but may use a 12vdc inverter to 240vac to rectify to 340vdc or so.

FTGV

Then maybe you could find a suitable step up transformer to follow the invertor.

zingo

disneyjoe7 wrote: »

This for a HHO Hydrogen idea I have to run my 4Runner on. I was thinking of using a 12vdc inverter to 120vac then rectified to 170vdc. I need to run some test first, but may use a 12vdc inverter to 240vac to rectify to 340vdc or so.

Good luck with that. It hasn't been successful done yet as far as I know as the electrolysis is far too slow.

disneyjoe7

Well I like to think I tried something, other then sit back and done nothing at all.