Voltage-to-current converter without series sensing resistor

Details Voltage-to-current converter without series sensing resistor Voltage-to-current converter without series sensing resistor

1993-09-23

1996-05-21

Wong, Peter S.

Electricity: power supply or regulation systems

Self-regulating

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

327538, 330288, G05F 316

Patent

active

055193102

ABSTRACT:
A voltage controlled current source including feedback circuitry which eliminates the need for a current sensing resistor in series with the output voltage controlled current source. The feedback circuit includes circuitry for generating a reference current which is proportional to, but much smaller than, the output current produced by the current source, and current mirror circuitry for generating a sense current which is equivalent to the reference current. The sense current is provided to a current sense resistor, across which a feedback voltage is developed. The voltage controlled current source further includes an amplifier connected to receive an input control voltage and the feedback voltage for generating the output current in response to the input control voltage and the feedback voltage.

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