High impedance voltage probe

Details High impedance voltage probe High impedance voltage probe

1975-06-30

1976-11-30

Lynch, Michael J.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307279, 324123R, H03K 1760, G01R 130

Patent

active

039951758

ABSTRACT:
A high impedance voltage probe with excellent high frequency response and extremely light loading of the circuit under test. The probe uses an IGFET input device having its source connected to a constant current source and to an amplifying device, and its drain connected to a variable voltage source. The output of the amplifying device is connected to a constant current source, to a non-linear voltage translating device and to an output terminal. The voltage translating device is also connected to the variable current source.

REFERENCES:
patent: 3532981 (1970-10-01), Bozoian
patent: 3667036 (1972-05-01), Seachman
patent: 3733597 (1973-05-01), Healey et al.
patent: 3828256 (1974-08-01), Lia
Tech Note, An Electrometer Amplifier for Electrophysiology with Low Input Capacitance, by Holmer, Med. & Biol. Eng. vol. 5, No,. 5, pp. 509-511.

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