Transient voltage protection circuit for a DC power supply

Details Transient voltage protection circuit for a DC power supply Transient voltage protection circuit for a DC power supply

1975-09-17

1977-04-26

Moose, Jr., Harry E.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Circuit automatically reconnected only after the fault is...

361 86, 361111, H02H 322

Patent

active

040203956

ABSTRACT:
A protection circuit for a DC power supply which protects the power supply nd its load against transient over voltages which may exist at the input to the power supply. The device also includes circuitry for protection of the power supply elements against short circuiting due to load failure. The circuit provides rapid and positive disconnect at the power supply input when a transient overvoltage is impressed, and an effective shut down of the entire power supply in the event of a short-circuit load. The device includes a transient voltage sensor network connected to a temperature stabilized powerload disconnect switch utilizing semi-conductive elements capable of extremely high switching speeds. The circuit switching is sufficiently fast such that the load operation and performance is not noticeably affected in the presence of fast transients impressed at the input to the power supply. Power dissipation in the device is confined to extremely fast turn on and turn off switching losses and saturation losses.

REFERENCES:
patent: 3543091 (1970-11-01), Marek
patent: 3571608 (1971-03-01), Hurd
patent: 3579039 (1971-05-01), Damon
patent: 3956661 (1976-05-01), Sakamoto et al.

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