Voltage threshold measuring circuit

Details Voltage threshold measuring circuit Voltage threshold measuring circuit

1990-07-27

1991-08-13

Karslen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With rotor

324158D, G01R 3126

Patent

active

050399411

ABSTRACT:
A circuit for determining the voltage threshold of a field-effect device is described. The invention includes an amplifier means which produces an output voltage directly proportional to the current flowing within the device-under-test. A circuit means is utilized for receiving the output voltage from the amplifier means and for generating a feedback voltage at the gate of the field-effect device. This feedback voltage is dynamically limited by an RC time constant such that the feedback voltage rapidly settles to the voltage threshold of the field-effect device.

REFERENCES:
patent: 3648170 (1972-03-01), Embree et al.
patent: 4382229 (1983-05-01), Cottrell et al.
patent: 4904881 (1990-02-01), Castro

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