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Low voltage circuit tester

  • US 20030151418A1
  • Filed: 02/08/2002
  • Published: 08/14/2003
  • Est. Priority Date: 02/08/2002
  • Status: Abandoned Application
First Claim
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1. A circuit tester comprising:

  • (a) a reference voltage source that provides a reference voltage;

    (b) an indicator having first and second response states, said first and second response states producing first and second indications, respectively;

    (c) an indicator driver connected to the reference voltage source, the indicator driver having an input, the indicator driver being connected to drive the indicator in the first response state when a voltage at the input is lower than the reference voltage and connected to drive the indicator in a second response state when the voltage at the input is higher than the reference voltage;

    (d) an oscillator having an output electrically coupled to the input of the indicator driver; and

    , (e) a probe electrically coupled to the input of the indicator driver;

    wherein, when the probe is not electrically connected to a circuit under test, the oscillator causes the indicator driver to cycle the indicator between the first and second response states.

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