Video Polarity and Direct Injection

[vts1134]

Originally Posted by old_coot88

Why not use a battery? 9V would probably run it OK, and drain would be minimal. Give it an on/off switch.

(Hum bars are the horizontal dark shadings in the raster due to 60 or 120 Hz ripple (hum).

I actually have a 12V battery in my pocket for that purpose. I figured I'd start there with my power supplies as it would be the "cleanest" supply.