Load independent current feeding circuit

Details Load independent current feeding circuit Load independent current feeding circuit

1990-11-15

1992-08-11

Stephan, Steven L.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323275, 307530, G05F 1565

Patent

active

051382482

ABSTRACT:
A circuit having a load connected to ground, a measuring resistor connected in series with the load; a current source feeding current into the load and the resistor, a different amplifier having one output connected to one end of the resistor and having its output connected to a summing point which is an input from the current source, a reference voltage source having one end connected to the summing point, is improved by an impedance converter having its input circuit connected to another end of the resistor and its output connected to another input for the differential amplifier, the latter output being further connected to an opposite end of the reference voltage source thus serving as floating ground for the reference source and the differential amplifier.

REFERENCES:
patent: 3546564 (1970-12-01), Denny
patent: 3735240 (1973-05-01), Davis et al.
patent: 4618814 (1986-10-01), Kato et al.
patent: 4933625 (1989-01-01), Hayakawa
Horowitz and Hill, The Art of Electronics (2nd edition) (c) 1989, pp. 457-462.

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