You mean like setting an offset or placing the 18v range between -9v and 9v instead of going up to 18v from 0v? This is very interestingsquarewave said:Meaning you can make a proper bipolar supply thats +9V, GND and -9V.
Like so?squarewave said:Anywhere in your circuit that reads GND becomes -V and anywhere that reads VB becomes GND. Except the 1M on the inputs and outputs - those need to be tied to your new GND.
Those are bleeders right? they need to bleed to GND but my new GND is now 9v right? This feels weird in my brainsquarewave said:Except the 1M on the inputs and outputs - those need to be tied to your new GND.
sonolink said:
Proud and happy I feel nowsquarewave said:Pretty close. Except C5 and C14 should go to GND and not -9. Another exception.
Thanks for the link RocinanteRocinante said:I like these guys pcb's as they make great clones. Here is their utility charge pump
https://www.pedalpcb.com/product/3pdt-chargepump/
I especially like that pedalpcb has a 9v+-.
Amz has another solution here
http://www.muzique.com/news/how-charge-pumps-work/
I know, it just feels weird to conceive negative voltage hehe but I'm adapting my mental frame slowlyNewmarket said:Think Bipolar (not in a mental health way !)
GND is GND and you have supply voltage rails above (+9V) and below (-9V) it.
sonolink said:I know, it just feels weird to conceive negative voltage hehe but I'm adapting my mental frame slowly
No. You would have to resurrect your VB R13, R12, C11 virtual ground circuit and then switch the "analog 0" between VB or GND.sonolink said:To make the PSU switchable between 9v and 18v would this work?
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