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Battery Testers

8 Low Battery Voltage Alarm indicator circuits

Last Updated on: November 23, 2021 by Apichet Garaipoom
Battery low 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.

Categories Meters & Detectors Tags Battery Testers, Battery indicators 14 Comments

Battery voltage monitor circuit by LM339

Last Updated on: July 12, 2021 by ElecCircuit.com
low voltage battery checker

The simple low voltage tester circuit using LM339,can use Battery voltage monitor for voltage sources that problems, by LED display and alarm sound.

Categories Meters & Detectors Tags Battery Testers, Electronic buzzer, Level voltage indicator 12 Comments

1.5V battery tester circuit using LM324

Last Updated on: November 23, 2021 by Apichet Garaipoom
1.2V or 1.5V battery tester circuit using LM324

This fine 1.5V battery tester circuit using LM324, Can measure the voltage of the 1.5V battery AA or AAA. As decimal point. Easy to use by LEDs display

Categories Meters & Detectors Tags Battery Testers 1 Comment

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