Voltage controlled variable current reference

Details Voltage controlled variable current reference Voltage controlled variable current reference

1996-07-31

1998-08-11

Wells, Kenneth B.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

With specific source of supply or bias voltage

327308, 327404, 323315, 323317, 326 87, H03K 301

Patent

active

057932484

ABSTRACT:
A current source providing a voltage-controlled variable-current reference is described which employs a conventional current mirror to supply a current to a diode-connected transistor, and to a plurality of controllable current paths, wherein the controllable current paths are controlled by voltages from a voltage sensing circuit so that predetermined amounts of current are drawn away from the diode-connected transistor as function of a controlled voltage, so that the diode-connected transistor generates a voltage as a function of the current flowing through it which voltage is used to control an output transistor and a current flowing through the output transistor.

REFERENCES:
patent: 4864162 (1989-09-01), Maoz
patent: 5457407 (1995-10-01), Shu et al.
patent: 5583464 (1996-12-01), Knight, Jr. et al.

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