Electricity: electrical systems and devices – Safety and protection of systems and devices – With specific quantity comparison means
Patent
1976-08-02
1978-07-25
Miller, Jr., Stanley D.
Electricity: electrical systems and devices
Safety and protection of systems and devices
With specific quantity comparison means
307296A, 307304, H03K 1700
Patent
active
041031814
ABSTRACT:
A protective device for, and a monolithic integrated transistor formed on a semi-conductor substrate of at least first conductivity type and having a first collector region of opposite conductivity type on the substrate, a buried region of opposite conductivity type and slight resistance between the substrate and collector regions, a base region of the first conductivity type formed on the collector region, an emitter region of the opposite conductivity type formed on the base region, the buried region being connected to the surface at the collector terminal and at a separate terminal. The voltage between the collector and separate terminals is compared with a reference in a differential circuit and a control signal produced to control the base voltage of the integrated transistor, and accordingly to protect the integrated transistor.
REFERENCES:
patent: 3300658 (1967-01-01), Slusher et al.
patent: 3562547 (1971-02-01), Brodie
patent: 3573573 (1971-04-01), Moore
patent: 3654530 (1972-04-01), Lloyd
"Thomson-CSF"
Davis B. P.
Miller, Jr. Stanley D.
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