H - Electricity – 03 – K
Patent
H - Electricity
03
K
323/4
H03K 17/14 (2006.01) G05F 3/22 (2006.01)
Patent
CA 1149886
ABSTRACT Prior art constant current source circuits with temperature compensation are known but they are not highly stabilized with respect to power supply voltage variations, a disadvantage in battery-powered equipment. The invention disclosed is a voltage and temperature stabilized constant current circuit. The circuit includes a differential amplifier having one input connected to a voltage reference and a second input connected to a voltage stabilizing circuit. A first output terminal is connected to the input of a temperature stabilizing circuit while a second output is connected to the input of the voltage stabilizing circuit. The voltage and temperature stabilizing circuits operate on a feedback principle.
369638
Fetherstonhaugh & Co.
N.v. Philips Gloeilampenfabrieken
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