Power disconnection alarm circuit diagram


Posted on Nov 10, 2015

Circuit operation principle of the device shown in Figure 13. When the barbed wire Fe intact, LSE's O, feet collusion between its pin output high,


Power disconnection alarm circuit diagram
Click here to download the full size of the above Circuit.

the transistor VT end, the relay J is released, the alarm does not work. If Fe barbed wire was cut (any period), then the LSE O, feet equivalent open, it feet is the original high state to a low state, transistor VT conduction, so that the relay J excitation pull its normally open contact j closure, connected to the alarm circuit power, then alarm.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Reliable FM transmitter
Rejection filter
A-one-transistor-fm-transmitter
supercapacitor usb light
diy time lapse circuit
small general purpose audio
Automobile turn signal circuit
The SV203 powered PPRKCircuit With Devantech SRF04 UltraSonic Sensor
1W LED Driver
FM receivers with PLL
Avoid contact thermometer circuit



Top