Logarithmic potentiometer circuit

Details Logarithmic potentiometer circuit Logarithmic potentiometer circuit

1985-03-27

1987-07-21

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

338 89, G01R 2702

Patent

active

046820990

ABSTRACT:
An inexpensive potentiometer circuit having an approximately logarithmic characteristic that can be accurately determined is obtained if a resistance element having a linearly adjustable ohmic resistance value is connected parallel to a negative impedance converter (1) having an output port connected to a fixed ohmic resistor (8).

REFERENCES:
patent: 4023094 (1977-05-01), Adams
patent: 4151478 (1979-04-01), Heinrich et al.
Sedra et al., Micro-Electronics Circuits, 1982, pp. 84-86.

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