battery tester

Battery Tester Circuit Diagram

Various types of dry and rechargeable battery (with an e.m.f. of ≤2.7) can be tested with the circuit shown in the diagram below. It is based on the well-known Type LM 3914 LED display driver from National Semiconductors. The battery tester circuit compares the e.m.f. of the battery with a reference voltage that is derived[…]

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