36V power supply?

[Marcos - Munky]

Anybody knows where I can find a schematic?

[Arn C.]

Marcos,
  You can use a computer power supply which will generate 12 volts dc-
check out this site:  

http://www.howstuffworks.com/power-supply.htm

then, you can use this voltage tripler from this site, down towards the bottom of the page:

http://recording.org/users/kev/PS.htm

This is just an idea, maybe someone else can verify that this may work!

Arn C.

[Marcos - Munky]

Thanks, Arn.

[danngreen]

hmm.. not sure if the voltage tripler will work with DC.. seems like it triples AC voltage only. Clever circuit, though.

Well, another way to approach it would be this:
You could use a LM317 (variable voltage power regulator). You just feed it 36V or more in unregulated DC, add two resistors [the datasheet explains that] and put a 100uF cap on the output and you've got a clean, noise-free 36V power supply.

The unregulated DC can be generated either by using a 36V wall wart... or by running 120VAC line current through a 36V power transformer, then run that through a bridge rectifier, and finally filter  the bridge's output with a 100uF cap.

Datasheet:
http://www.national.com/pf/LM/LM317.html

hope that helps...
dann

[Peter Snowberg]

Voltage multipliers use AC to do their magic, so a DC supply will not work. Luckily, there are chips out there that will make AC for you at higher-than-audio frequencies. This has two advantages.... first, the capacitors can be of a much smaller value, and second, the AC is above any frequency where you'll hear it.

Check out this info on using the 1044 voltage converter:
http://www.geofex.com/circuits/+9_to_33.htm

Of course R.G. has the data ready and available.

The classic name for these capacitor-diode multiplier circuits is a %^&*roft-Walton multiplier, after the inventors.

http://home.earthlink.net/~jimlux/hv/cw1.htm

You see them quite often in low current high voltage supplies, as well as some not so low current versions being used in atom smashers.



-Peter

[Marcos - Munky]

Thanks, Peter.