Balancing system for limiting voltage imbalance across series-co

Details Balancing system for limiting voltage imbalance across series-co Balancing system for limiting voltage imbalance across series-co

1984-01-26

1986-02-04

Beha, Jr., William H.

Electricity: power supply or regulation systems

Including an impedance

333181, 363 37, 363 48, G05F 308

Patent

active

045688710

ABSTRACT:
When a series string of similar circuit components, such as capacitors, are connected across a source of d-c voltage and those circuit components do not divide the applied voltage equally because of having different leakage resistances, and consequently different leakage currents, the voltage imbalance may become so great that the maximum allowable voltage or voltage rating of at least one of the circuit components may be exceeded, resulting in damage to or the destruction of that component. To limit the voltage imbalance, thereby to protect the circuit components, each of those components is shunted by a separate voltage limiting device, such as a zener diode. The threshold or breakdown voltage of each limiting device is less than the maximum acceptable voltage of the device's companion circuit component so the voltage across that component will be limited to and will never be greater than that maximum acceptable level regardless of the differences that exist in the leakage resistances.

REFERENCES:
patent: 1686022 (1928-10-01), Marbury
patent: 2737625 (1956-03-01), Felici
patent: 3358220 (1967-12-01), Fahlen
patent: 3373335 (1968-03-01), Rosenberg
patent: 4333046 (1982-06-01), Lee
Electronic Design, vol. 16, No. 1, p. 154, Jan. 4, 1968.

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