Combined bias supply power shut-off circuit

Details Combined bias supply power shut-off circuit Combined bias supply power shut-off circuit

1989-07-17

1991-03-12

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

3072961, 307592, 365227, H03K 301, H03K 513

Patent

active

049995162

ABSTRACT:
A microcircuit bias-current supply in a wristwatch-pager. An FM-radio receiver in a microcircuit paging device operates intermittently with a short on-time and long off-time to reduce power consumption and preserve battery life. Ths bias-supply circuit distributes predetermined bias currents to a plurality of functional circuit areas of the microcircuit die, the bias currents being disabled during off-time of the receiver such that the current drain of the entire microcircuit is virtually zero, being in the range of nanoamps. The inefficiencies and disadvantages of a series switch to switch power on and off are eliminated by providing a plurality of switched current sources which perform the dual function of circuit biasing and current switching.

REFERENCES:
patent: 4323881 (1982-04-01), Mori
patent: 4645953 (1987-02-01), Wong

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