LED Voltmeter for car battery by LM324

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Voltmeter for car battery by LM324

The circuit, is a comparator, can measure with step of 1Volt, the voltage of battery of car. The clue of voltage become after comparison of voltage of battery, that is applied in the inverting inputs of amplifiers, with voltages of reference that are produced by a Zener D1, the value of which is such so that it present good thermic stability. With the RV1, we regulate the gradation of voltage that we want. The optical clue become from four Led.
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Source :: http://users.otenet.gr/~athsam/voltmeter_with_led_for_car_battery.htm

This entry was posted on Tuesday, June 5th, 2007 at 10:54 pm and is filed under Automotive, battery, meter. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.