Circuit arrangement for securing the supply voltage supply of an

Details Circuit arrangement for securing the supply voltage supply of an Circuit arrangement for securing the supply voltage supply of an

1982-03-31

1984-01-24

Goldberg, E. A.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307130, 307200A, 361 88, H01H 8312, H02H 324

Patent

active

044278993

ABSTRACT:
A circuit for assuring the supply of voltage to an electronic circuit can be switched to an auxiliary voltage source via a series-connected, self-conducting field-effect transistor when the supply source fails. The circuit, which is realized with very little circuitry, has a voltage divider connected across the load; a tap on the voltage divider is connected to the gate electrode of the transistor. The invention is useful, for example, for protecting data in C-MOS memories of microprocessors.

REFERENCES:
patent: 4342922 (1982-08-01), DiMassimo et al.
"Electronics" Jan. 1981, pp. 129-132.

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