Battery Voltage Monitor circuits
The simple low voltage tester circuit using LM339,can use Battery voltage monitor for voltage sources that problems, by LED display and alarm sound. Read more
Battery Testers
8 Low Battery Voltage Alarm indicator circuits
Why your circuit does not work? Because the battery is run out. These low voltage indicator circuits may helpful for you. If you can know before and change a new one right now. It makes you not have to waste time when using those projects. Read more
1.5V Battery Tester Circuit
This 1.5V battery tester circuit uses the LM324 to measure 1.5V / 1.2V AA or AAA batteries. The batteries’ charge is displayed using 8 LEDs. Read more