High Voltage DC
 

Do a google search for flyback+tesla coil and you'll get loads of hits for a
very popular, very simple one or two transistor high voltage generator.
Here's one link...
http://www.aaroncake.net/circuits/hvgen.htm
With 12V input, you can get around 8KV output.
Add a diode to the outpu and you get 8KV DC.
Reduce input voltage accordingly to get 4KV.
There is also a cct diagram for a 4000volt DC supply in one of Robert
Ianinni's books (He of Information Unlimited fame.)
Cheers.
Mark H.

"Ed" wrote in message
...
Hello,

I would like to make a simple DC power supply capable of giving around
4KV.
The current only needs to be small. Is it possible to make such a power
supply that runs off a 9V battery? If it is, can anyone give me some
pointers on making one, links to schematics would be even better. I'm
hoping I could use an off the shelf transformer, rather than making my
own.

Thanks in advance,

High Voltage DC
 

Hello,

I would like to make a simple DC power supply capable of giving around 4KV.
The current only needs to be small. Is it possible to make such a power
supply that runs off a 9V battery? If it is, can anyone give me some
pointers on making one, links to schematics would be even better. I'm
hoping I could use an off the shelf transformer, rather than making my own.

Thanks in advance,

High Voltage DC
 

You can also use the inverters from an old disposable photoflash unit
in combination with a cockcroft-walton multiplier. I have some
schematics at http://home.satx.rr.com/worpjr/Physi..._cockcroft.htm
If you need help gutting and modifying the inverter, just send me and
e-mail.

The unit i designed and built was for around 9 kV, but you can
scale it down if you want.. The voltage from a CW-multiplier is close
to (Source voltage) * 2 * (Number of stages). The voltage on each
capacitor should be rated at least 2 * Source Voltage: peak to peak,
not RMS.


Best Regards,
- Joshua.

"Ed" wrote in message ...
Hello,

I would like to make a simple DC power supply capable of giving around 4KV.
The current only needs to be small. Is it possible to make such a power
supply that runs off a 9V battery? If it is, can anyone give me some
pointers on making one, links to schematics would be even better. I'm
hoping I could use an off the shelf transformer, rather than making my own.

Thanks in advance,