Power supply switch circuit

Details Power supply switch circuit Power supply switch circuit

1986-03-03

1987-06-16

Miska, Vit W.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 66, H02J 906

Patent

active

046738240

ABSTRACT:
A power supply switch circuit includes a transistor for switchably connecting portions of a current path between a standby power supply and a power supply controller, with a capacitor as a temporary current source for the controller once the path portions are disconnected. The transistor is coupled to a switch which causes the transistor to connect and disconnect the portions of the current path. The capacitor is coupled to the transistor for discharging current to the power supply controller for a predetermined time after the switch signals the transistor to disconnect the path portions. A power-down indicator senses this signal by the switch to the transistor and in response transmits an alert signal to the instrument logic warning that a break in current is imminent. This warning permits the logic to save relevant information while power is provided through the capacitor.

REFERENCES:
patent: 3505531 (1970-04-01), Wattson
patent: 3859638 (1975-01-01), Hume, Jr.
patent: 3980935 (1976-09-01), Worst
patent: 4342922 (1982-08-01), DiMassimo et al.
patent: 4560887 (1985-12-01), Schneider
patent: 4611302 (1986-09-01), Bolkett-Pugh

Affiliated with

Also associated with

Rating

Power supply switch circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Power supply switch circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Power supply switch circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-685300