Hi there, I'm new to this forum. Currently, I trying to built a balance - unbalance and vice versa circuit but run on a normal adapter. The adapter deliver 12Vdc only. In this case how can I power the opamp into the negative rail since I'm just having +12Vdc. I had tried using a 555 charge pump to produce the negative portion. But the current is too small to power 4 pcs of TL074 opamp, besides others circuitry too. How could I acheive this? Maybe another question here is. Is charge pump psu good for the balance - unbalance? Will it distort the signal or producing noise to it? Thanks for reading. Regards Alvin
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Unbalanced to blanced
in Electronic Projects Design/Ideas
Posted
Hi there,
I'm new to this forum.
Currently, I trying to built a balance - unbalance and vice versa circuit but run on a normal adapter.
The adapter deliver 12Vdc only. In this case how can I power the opamp into the negative rail since I'm just having +12Vdc. I had tried using a 555 charge pump to produce the negative portion. But the current is too small to power 4 pcs of TL074 opamp, besides others circuitry too.
How could I acheive this?
Maybe another question here is. Is charge pump psu good for the balance - unbalance? Will it distort the signal or producing noise to it?
Thanks for reading.
Regards
Alvin