80v dc source

Thread Starter

tuti

Joined Sep 18, 2007
1
i am triyng to build an 80 v dc source for a project i know that the easieste way to do oit is to use a transformer but getting an 80 volts transformer is imposible for me.
is there any other way to drop the voltaje to 80 volts before the diode bridge?
thanks
 

beenthere

Joined Apr 20, 2004
15,819
Can you get a transformer with a 56 volt secondary? Rectification and filtering will give close to 80 VDC. How much current and how accurate must the 80 volts be?
 

SgtWookie

Joined Jul 17, 2007
22,220
What is your output current requirement?

If small, you could go with, say, a 24vac transformer, and use a voltage quadrupler circuit - just diodes and capacitors. You won't get a lot of current, but that's one inexpensive way to go.

Here's a page with example voltage doubler, tripler and quadrupler schematics:
http://www.coolcircuit.com/circuit/voltage/
You could use 1N4004 or 1N4007 epoxy rectifiers for the diodes, among others.

Voltage regulation (if required) will require a bit of research. I don't know offhand of a single-IC solution for a Vreg for that high of a voltage.
 
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