-5V from +5V supply...

Thread Starter

dtvonly

Joined Dec 14, 2012
43
Hi. Using discrete components (w/o any ICs like 7905), how can I get (or reverse) a +5V into a -5V supply? Please provide circuit or link to a circuit. Thank you.
 

MrChips

Joined Oct 2, 2009
30,714
If you have a restriction on using ICs, you can use a transistor oscillator driving a small transformer or a voltage doubler circuit.
 

Thread Starter

dtvonly

Joined Dec 14, 2012
43
Hello MrChips. One question about the devices you mentioned: what is the maximum current drive capability? The datasheets only mentioned supply current, voltages and test current of up to (only) 30mA. Is this the maximum for these devices?
 

Thread Starter

dtvonly

Joined Dec 14, 2012
43
Hi. I will need about 100mA. I can either buffer the output or use another inverting device, if there is one with higher output current drive.
 
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