Thursday, February 23, 2012

Low Voltage Monitor schematic

Low Voltage Monitor circuit is highly desirable for security and protection against everyday damage your equipment, especially for your favorite car. This circuit may be very simple / very simple to make because only by using ic LM339. The workings of this circuit is Buzzer will sound and lights Led will light up when your car battery in a state of tension is very minimal. Although the circuit is very simple but can protect your car from damage that would be very detrimental. This voltage monitor circuit may be beneficial to you.

Component List:

R1, R3 2 1K 1/4W Resistor
R2 1 5K Pot
U1 1 LM339 Voltage comparator IC
D1 1 1N5233B Zener Diode
D2 1 LED
BZ1 1 Piezo Buzzer
MISC 1 Board, wire, socket for IC

1. The circuit will operate from 9V to 12V.
2. Adjust R2 until the alarm goes off at the correct voltage.

No comments:

Post a Comment