Re: Voltage Doubler

From: cornytheclown (cornytheclown_at_hotmail.com)
Date: 11/21/04 

Date: 21 Nov 2004 10:25:15 -0800

"Jay" <jay@nospam.co.uk> wrote in message news:<cnonqb$tr$1@newsg2.svr.pol.co.uk>...
> I have a design for which I need to generate a high DC voltage (more than
> 400V). My power source for this voltage is the UK mains (230Vrms @ 50Hz).
> The way I see it is that I have 2 options. The first option is to use a
> step up transformer and a bridge. The transformer would need a ratio of 1:2
> (primary: 230V, secondary: 460V). As I cannot find any off the shelf
> transformers I would need to wind my own. My second option is to use a
> simple voltage doubler consisting of 2 capacitors and 2 diodes. The output
> of the voltage doubler would be something close to 460V DC.
>
> Out of the 2 options the voltage doubler seems the most straightforward.
> Some questions I have on this setup are:
>
> 1) Does the transformer option offer any advantage over the voltage doubler?
> 2) How can I determine the maximum current that can be drawn from the
> voltage doubler?
> 3) Is connecting a voltage doubler directly to the mains a good idea?
>
> If you have any opinions or advice on this subject then please share them.
>
> Thank you.

Looks like you could find a suitable transformer if you hunted around
at some sources that carry old tube type radio equipment. They would
have 460 volt output or close transformers........also.....couldnt a
person use a microwave oven transformer and strip off some of the
secondary windings till he got the desired output ???

Relevant Pages

  • Re: choke input voltage doubler?
    ... This is basicly two half wave ... >> wave rectifier of the voltage doubler, ... >> In this case I could use one choke for both halfs ... >> or 1.8 times the rms voltage of the transformer. ...
    (rec.radio.amateur.homebrew)
  • Re: Voltage Doubler
    ... >>step up transformer and a bridge. ... My second option is to use a ... >>3) Is connecting a voltage doubler directly to the mains a good idea? ... Might be ok if you're careful as to which line ...
    (sci.electronics.basics)
  • Re: Voltage Doubler
    ... >step up transformer and a bridge. ... The transformer would need a ratio of 1:2 ... >Out of the 2 options the voltage doubler seems the most straightforward. ... you would put the two primaries in series. ...
    (sci.electronics.basics)
  • Voltage Doubler
    ... I have a design for which I need to generate a high DC voltage (more than ... The transformer would need a ratio of 1:2 ... My second option is to use a ... simple voltage doubler consisting of 2 capacitors and 2 diodes. ...
    (sci.electronics.basics)
  • Re: What Oscillator is in This PS?
    ... ratios were common for those ... I have noticed the transformer version will work without the voltage ... Also efficiency increases by about 4% with the voltage doubler. ...
    (sci.electronics.design)