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Plural comparator indicator of battery voltage

  • US 4,020,414 A
  • Filed: 01/31/1975
  • Issued: 04/26/1977
  • Est. Priority Date: 01/31/1975
  • Status: Expired due to Term
First Claim
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1. A battery charge capacity indicator for providing an indication of charge capacity of said battery comprising:

  • a pair of battery connecting terminals;

    voltage divider network means connected to said battery connecting terminal;

    a plurality of voltage comparators, each comparator having a first input individually connected to one of said branches of said voltage divider network means;

    means connected to said battery connecting terminals for providing a reference voltage, said reference voltage means connected as a second input to each of said volatage comparators;

    a plurality of biased switching means, each switching means connected to a different output of each of said voltage comparators which provides an input signal to bias individual switching means;

    a plurality of indicating means, each individual indicator means connected to a different biased switching means,circuit switching means connected to said battery connecting terminals having a first, second and third position providing a on-off test position of said circuit.

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