Re: Mixing AC and DC
Posted: Wed Apr 03, 2013 1:11 pm
^... excellent, the penny drops! That's what I need... electrics made simple 
You can use a common earth for AC and DC as long as you don´t use a "full wave" rectifier.Most bikes use a "half wave" rectifier.This means that the DC electric flow has ciclic "cuts".
Thats a half wave rctifier:http://www.visionics.a.se/html/curricul ... age206.gif
And thats a ful cicle rectifier:http://upload.wikimedia.org/wikipedia/c ... Filter.png
If in an AC circuit (witout battery) you want to use some accesori that needs DC and use a full cicle rectifier DON´T earth it to the AC earth!!!.In this case you must isolate both wires + and - from the bike body.
