undefined | Better HN

0 pointsjacquesm16y ago0 comments

You can possibly get rid of the pair of 9V batteries by using a floating ground that you make with two resistors.

0 comments

2 comments · 2 top-level

But then what would he use for the voltage source, + and - 4.5V? It appears he wants the + and - 9V available for the amplifier. But my EET is extremely rusty.

1 more reply

jgrahamc16y ago

Agreed. I am redesigning it for the production version. I'd like to pull everything from the USB if possible.

1 more reply

j / k navigate · click thread line to collapse