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Negative voltage dividing ...

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tooti

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how to make a negative voltage divider with just + and GND?
 

leomecma

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Use an operational amplifier to make a virtual ground, then between ground and virtual ground you have a negative voltage that you can use to your negative voltage divider ... but all your circuit have to be referenced on virtual ground.


leomecma
 

IanP

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You can generate negative voltage from positive.
Try to employ 555 timer as negative voltage generator (see picture below).
To regulate negative voltage you can place at the output a zener diode of required value ..
Regards,
IanP
 

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