Overvoltage protector

Details Overvoltage protector Overvoltage protector

1995-07-28

1999-03-16

Medley, Sally C.

Electricity: electrical systems and devices

Safety and protection of systems and devices

High voltage dissipation

361 56, 361 91, H01C 712

Patent

active

058837752

ABSTRACT:
An overvoltage protection circuit passes all the normal operating voltages and limits the peak voltage increase during a lightning impulse to a level comparable to the battery voltage. Normal operating voltages of 200 V peak are passed and under lightning impulse conditions the voltage increase is limited to about 90 V. The circuit has first and second protectors connected in series, the first protector being a standard thyristor protector and the second being a gated bidirectional thyristor connected to a diode and a capacitor.

REFERENCES:
patent: 4653084 (1987-03-01), Ahuja
patent: 4695916 (1987-09-01), Satoh et al.
patent: 4908854 (1990-03-01), Lofmark et al.
patent: 5146384 (1992-09-01), Markovic et al.
patent: 5576919 (1996-11-01), Wilkens

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