Short dc power-line pulses afford remote control


Posted on Nov 30, 2012

If you face the challenge of adding a second, independently controlled light source to an existing ceiling lamp controlled by a wall switch, you may find that stringing a second power line is impossible. First, you can replace the wall switch by the circuit in Figure 1. Pushing the on switch S1 or S2 for approximately 1 sec inserts the 12V zener diodes D1 or D2 in series with the hot wire of the power line.






Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Ham radio Communication
Lie detector
Speech activity detector for telephone lines
Transistor Clock
voltage to frequency converter icl8038
L6203 DC motor controller circuit
555 tone generator circuit
awhile shuts fire and feul pressure have rebuilt distributor
VFO circut
Infrared IR Illuminator DIY
Active Plug Classic
DA-101 FM radio circuit chip



Top