Power select circuit

Details Power select circuit Power select circuit

1988-03-29

1989-02-21

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307494, 307496, 307451, 307355, 307364, 307554, 307568, 328146, 328147, H03K 301, H03K 522, H03K 508, H03F 345

Patent

active

048067890

ABSTRACT:
A first node is connected to an external power source via a switch. A second node is connected to an internal power source whose voltage is lower than that of the external power source. The first and second nodes are connected to an output node via first and second MOSFET switches. The output node is connected to a semiconductor circuit. The potentials at the first and second nodes are compared with each other by a voltage comparator connected between the output node and ground. A MOSFET is quickly turned on and off in response to the potential at the first node.

REFERENCES:
patent: 4527076 (1985-07-01), Matsuo et al.
Nikkei Electronics, 1986, 4.7 No. 392, p. 77.

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