Arrangement for the inductive querying of and supplying of power to an isolated circuit having an electrical consuming device
US5041817A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 1989 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | Apr 17, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An arrangement for the inductive querying of and supplying of power to an isolated circuit having an electrical consuming device. The arrangement uses two isolating transformers each with a read winding to simultaneously compare the resistance of the consuming device with that of a simulation device when powered by a low alternating test current. Te arrangement has two outputs for test voltages corresponding to resistance deviations of the consuming device and the reference element, deviate in opposite directions. A bidirectional crosswise transmission of the testing power and the testing signal for the consuming device and the simulation compensates for tolerances of the transformers. When an increased alternating current is fed, the arrangement also causes the efficient supplying of power to the consuming device and a limiting of the power loss at the simulation. A CAN/VAN integratable arrangement performs the testing of and supplying of power to the triggering circuit of a safety system, as well as the inductive supplying of power to a steering wheel computer and the cableless command transmission, for example, for the actuating of signal devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.