Floating precision current source

Details Floating precision current source Floating precision current source

1983-12-12

1985-07-09

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

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

323281, G05F 146

Patent

active

045284954

ABSTRACT:
A floating precision current source circuit comprising: a voltage source means referenced to a reference potential, such as ground, for providing at least one precision voltage reference, and a floating first means for generating a precision unipolar current, the floating first means being responsive to the precision voltage reference and having: a current source terminal, and a current sink terminal; the floating first means being characterized as sourcing the precision unipolar current to the current source terminal and sinking the precision unipolar current from the current sink terminal; load switching means for coupling the current source terminal at a first potential to the load terminal at a second potential; the floating first means being further characterized as controlling the value of the precision unipolar current from the current source terminal, through the load switching means to the load terminal, the precision unipolar current value being relatively independent of the current source terminal first potential and the current sink terminal second potential.

REFERENCES:
patent: 3623140 (1971-11-01), Nercessian
patent: 4315207 (1982-02-01), Apfel

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