Your Universal Remote Control Center
Custom Installers' Lounge Forum - View Post
Up level
Up level
The following page was printed from


Original thread:
Post 2 made on Sunday June 21, 2009 at 16:54
Advanced Member
May 2009
A small addition to any DC powered circuit where polarity is an issue is to install a full wave bridge using the AC inputs as designed and the DC outs will always be the correct polarity even if using reversed DC polarity INPUTS.

I put these in every custom device I build that uses external wall wart style power supplies. That way you can use AC or DC output generic supplies of either polarity. Add a voltage regulator IC and 2 caps and you can use any voltage supply- AC or DC- as long as the input voltage is at least 2 volts higher than the output voltage needed.

Hosting Services by ipHouse