Pulse energy suppression network

Details Pulse energy suppression network Pulse energy suppression network

1975-10-31

1977-04-05

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

307240, 321 13, 323DIG1, G05F 156, H03K 1764

Patent

active

040164829

ABSTRACT:
A power translating circuit of the general kind utilized in transformer coupled transistor switching regulators has a source of DC, the primary of a transformer and a switching transistor in series. To protect the transistor from excessive power dissipation during its turnoff transition, a surge diverting path including a diode poled oppositely to the transistor is provided in parallel with the transistor, the diode being in forward conduction at the beginning of turnoff of the transistor and becoming back-biased as the transistor turns off, the reverse conductivity of the diode during its recovery serving as a temporary path diverting some of the power dissipation at turnoff away from the transistor.

REFERENCES:
patent: 3736495 (1973-05-01), Calkin et al.
patent: 3818311 (1974-06-01), Mattson et al.
patent: 3859590 (1975-01-01), Cielo et al.
Hoffman et al., "Transistor Fast Turnoff Insensitive to Drive Transition", IBM TDB, vol. 17, No. 4, Sept. 1974, pp. 1089, 1090.

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