Parking call alarm circuit


Posted on Nov 10, 2015

Circuit works: lC is a 555 IC. Incoming calls, 220 V electricity through R1 Buck, VD1 rectifier, DW regulator, C2 filtered to give 12 V DC voltage of about.


Parking call alarm circuit
Click here to download the full size of the above Circuit.

When an incoming call, VT base due to voltage on C3 non-mutation showed low potential. VT cutoff, the collector is high potential, so that the reset terminal lC 4 feet high.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

LED Voltmeter
PIC Programmer
Low battery indicator
Long Delay Timer Circuit
Unijunction Transistor Tutorials
National LM386 Audio Power Amplifier Datasheet for Battery Operation



Top