Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Patent
1992-05-29
1993-11-09
Beha, Jr., William H.
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
323223, G05F 1613
Patent
active
052606449
ABSTRACT:
A shunt regulator for isolating a power supply and load is described which automatically adjusts the quiescent current though the shunt, and therefore its available dynamic range, in proportion to the load current fluctuations. A signal proportional to the load current fluctuations is differentiated, detected, integrated and fed back to control the bias on the shunt. When large load current fluctuations occur, the operating point of the shunt is shifted to higher current values so as to provide a large dynamic regulation range. When load current fluctuations are small or zero, the operating point of the shunt is moved toward cut-off, thereby reducing the dynamic range of the shunt and conserving power. This substantially reduces the power dissipation in the regulator because the shunt need not be constantly biased to handle the largest anticipated load current fluctuation.
REFERENCES:
patent: 4366432 (1982-12-01), Noro
Drawings from a Book entitled Electronic Circuits Manual, by John Markus, McGraw-Hill Book Company, Copyright 1971, pp. 651,655,666, and 669.
An article entitled "Voltage Regulators", from the book Silicon Power Transistor Handbook, published by Westinghouse Electric Corporation, Copyright 1967, pp. 6-17 through 6-22.
Beha Jr. William H.
Handy Robert M.
Motorola Inc.
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