Pax Writer
New Member
Hello all
I'm building a portable sound amplifier circuit which is powered by a single 9V battery. However, the TL072s in the circuit need some sort of +/- supply. I was thinking about trying out a MAX232 or similar RS232 line driver, which makes +/- 10V unregulated power, but my question is:
Do you know of a better/simpler/cheaper/smaller (physically) solution to this problem?
The current I need will probably be in the tens of milliamps at most, so the demands on the supply aren't too great. Regulation would be nice, though.
I ask this question both because of ignorance, but also because the ingenuity of other people often surprises me.
I hope you can help.
I'm building a portable sound amplifier circuit which is powered by a single 9V battery. However, the TL072s in the circuit need some sort of +/- supply. I was thinking about trying out a MAX232 or similar RS232 line driver, which makes +/- 10V unregulated power, but my question is:
Do you know of a better/simpler/cheaper/smaller (physically) solution to this problem?
The current I need will probably be in the tens of milliamps at most, so the demands on the supply aren't too great. Regulation would be nice, though.
I ask this question both because of ignorance, but also because the ingenuity of other people often surprises me.
I hope you can help.