1989-02-02
1990-03-13
Clawson, Jr., Joseph E.
357 51, 357 55, 357 64, 357 86, H01L 2974
Patent
active
049086871
ABSTRACT:
A multistage amplifying thyristor incorporates integral current control resistor regions between adjacent thyristor stages for limiting turn-on current in all but the main thyristor stage. The thyristor is essentially immune from di/dt turn-on failure without the need for external circuitry to limit di/dt in the thyristor. Modulation of the current control resistor region during turn-on is prevented by adequately spacing or shielding the region from the emitter of each thyristor stage as well as by adequate spacing or shielding of the resistor region from a portion of the lowermost emitter region containing a turn-on plasma of the preceding thyristor stage.
REFERENCES:
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patent: 4281336 (1981-07-01), Sommer et al.
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Clawson Jr. Joseph E.
Davis Jr. James C.
General Electric Company
Ochis Robert
Snyder Marvin
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