Electricity: power supply or regulation systems – Output level responsive – Using an impedance as the final control device
Patent
1986-12-23
1988-01-12
Wong, Peter S.
Electricity: power supply or regulation systems
Output level responsive
Using an impedance as the final control device
323224, 323233, 323268, 323354, G05F 1656
Patent
active
047194049
ABSTRACT:
A switched resistor regulator controls current flow through a resistor electrically connected to a load by varying the duty cycle of switching the resistor into electrical connection between of a power source and the load to regulate the power to the load. Both current and voltage regulation can be achieved. In a series switched configuration, current flow through a resistor in series with the load is controlled with current flow being maintained by a capacitor is parallel with the load when the resistor is switched off. In a shunt switched configuration current flow through a resistor in parallel with the load is controlled, with a capacitor parallel to the load also being used. In a hybrid configuration a shunt switched resistor is used while the current level to the load is changed by selecting one of several series resistors; a capacitor is also provided parallel to the load. In a switched resistor passbank configuration a series switched resistor is used with a capactitor connected in series with the load and parallel to the switched series resistor. A linear dissipative regulator is also connected between the supply and the load in parallel with the series resistance of the switched resistor regulator to reduce the minimum voltage drop to the load when the switching duty cycle reaches 100% for the series switched configurations or 0% for the shunt switched configurations.
REFERENCES:
patent: 1892215 (1932-12-01), Mathieu
patent: 2932783 (1960-04-01), Mohler
patent: 3305769 (1967-02-01), Julie
patent: 4290007 (1981-09-01), Fisher et al.
patent: 4305651 (1981-12-01), Umezawa et al.
Davis Paul
Spectra-Physics Inc.
Wong Peter S.
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