Help: +12V / -12V Power supply

[Jnathen]

linear virtual ground 24v + i 12v

I am trying to generate a +12 / -12V supply from AC current input (1A). I need the voltage (+12 / -12V) to be gererate within a few msecs.
I have a design attached that generates the 24V ; but what i need is +12 and -12V. Any help is greatly apreciated.

 

[IanP]

If you have 24V you can implement so called virual ground and split 24V into two identical (12V+12V) halves ..
Here are examples:
https://tangentsoft.net/elec/vgrounds.html

Regards,
IanP

 

[Jnathen]

Thank you very much - I was concerned with the unevenness of the +12/-12 Voltage, as the current starts flowing. I think some of the circuits you indicated by resolve this issue. Again thank you.

 

[melc]

Generating virtual ground using any linear tehniques works only for low output power. It's not very clear if you need to convert the whole 1A/24V power into +/-12V. If so, methodes presented will produce all a lot of heat.

 

[Jnathen]

Melc -tks - The 24Vdc, i will use to power up most of my circuit.
I need the +12 / -12V supplies to power up a load of aproximatelly 20mA (4 quad -package op-amps). I need the + and - suplies for these opamps.
I need to generate this +12 / -12Vdc the same time the 24Vdc is been generated without a delay.