Battery economising circuit
US4683414A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 22, 1985 |
| Grant date | Jul 28, 1987 |
| Priority date | — |
| Expiry date | Jul 22, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/901
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A battery economising circuit for use with one or more operating circuits, for example a part or parts of a radio circuit. In the battery economizing circuit an opposed current mirror type of current reference circuit determines entirely the current consumed by the operating circuit. A control circuit is connected to a point in the reference circuit from which current can be extracted. The control circuit in response to an OFF signal causes a portion of the current in the reference circuit to be diverted so that the reference circuit cannot sustain its normal ON- state and in response thereto assumes its OFF- state in which the operating and control circuits do not take current. The control circuit further includes means whereby current can be injected into the current reference circuit to cause it to assume its ON state and in consequence the operating circuit takes current. In the case of there being several current reference circuits and associated control circuits, the inputs of the control circuits are all connected to a common signalling bus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.