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ESD monitoring circuit and device

  • US 5,719,502 A
  • Filed: 01/17/1996
  • Issued: 02/17/1998
  • Est. Priority Date: 01/17/1996
  • Status: Expired due to Term
First Claim
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1. An electrometer comprising:

  • a first input channel termed a proximity detect channel,a second input channel termed a probe channel,a means to display a voltage detected by said electrometer;

    whereininputs to said two input channels are attenuated respectively by a first active voltage divider and a second active voltage divider, said active voltage dividers are constructed to give said electrometer an extremely high input impedance on the order of 100 gigohms, thereby allowing said electrometer to measure an ESC without causing a rapid discharge.

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