Need help with electronics

Started by forest, 2011.08.28, 13:21:05

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forest

2011.08.28, 13:21:05
Hi

I need advice from electronic guru. I have done symmetrical powerr supply for my sinewave generator needed to test TPU kind device. I dislike however the idea of stepping down from 230V from power grid to -15V 0V +15V. Is that possible to get the voltages from single power supply for example -6V 0V +6V from single car battery ?

poynt99

#1
2011.08.28, 13:40:04
You can use the trick of creating an "artificial ground" at the +6V level, then run your circuit on pseudo +/- 6V.

Keep in mind that you are reducing the supply voltage quite a bit, and some of your IC's may not function properly.

Here are some examples of how to achieve the pseudo ground.
http://forum.allaboutcircuits.com/showthread.php?p=84026

.99
"Some scientists claim that hydrogen, because it is so plentiful, is the basic building block of the universe. I dispute that. I say there is more stupidity than hydrogen, and that is the basic building block of the universe." Frank Zappa

Peterae

#2
2011.08.28, 13:42:06
LOL i was a bit slower  :)

Virtual ground is what you need
http://tangentsoft.net/elec/vgrounds.html
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