Bargraph Led Battery Tester Circuit


Posted on Apr 9, 2012

The LM3914A bargraph LEDis used here as a voltmeter for battery testing. The circuit is powered by a 4.5-V battery and compares the battery under test with an internally derived reference, set by R1/R2/P1. Each LED of the 10 represent 10% of full scale.


Bargraph Led Battery Tester Circuit
Click here to download the full size of the above Circuit.

For best results, the battery (D.U.T.) should be loaded with an appropriate resistor.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Control 32 DAC channels via a parallel port
EM Field Probe with Meter
Precise wave generator
Electronic-dice
Linear Video Amplifier SECAM PAL and NTSC
Road remote control switch production
low frequency sinewave
Simple Knock Alarm With Piezo Sensor
Ohms Law
AVR Color Clock
CD4060 production time controller circuit diagram
Crystal oscillator circuit diagram of a compatible IC
Ship Navigation lights circuit



Top