G - Physics – 01 – R
Patent
G - Physics
01
R
340/159, 324/59,
G01R 19/32 (2006.01) G01K 7/01 (2006.01) G01K 7/02 (2006.01) G05F 1/613 (2006.01) G05F 3/26 (2006.01)
Patent
CA 1065966
ABSTRACT A fractional part of a voltage to be regulated is applied between the base electrodes of first and second emitter-coupled transistors having base-emitter junctions with different VBE versus current characteristics. The collector currents of the first and the second transistors are caused to be in a predetermined ratio by a degenerative feedback loop which adjusts the value of the voltage to be regulated. Since the aforesaid fractional part of this voltage must vary linearly with the temperature change of the first and second transistors in order to maintain their collector currents equal, the voltage to be regulated must vary inversely as this fraction with that temperature change. The fractional part can be of fixed value, in which case the voltage to be regulated will vary linearly with the temperature change of the first and second transistors, or it can be changed from one value to another to cause the voltage to be regulated to vary in a more complex manner with temperature. - 1 -
207544
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