Power-supply and communication
US5798913A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1996 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Oct 16, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33576
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A power-supply and communication circuit is based on a flyback converter with a transformer (6) whose primary winding (10) is periodically connected to a supply voltage by means of a switching element (8) in the rhythm of control pulses from an oscillator (24). Data communication to the secondary electronic circuitry (4) is effected by interrupting the control pulses in response to a first data signal (SDTA1) to be transmitted. The absence of the alternating voltage across the secondary winding (18) is detected by means of a peak detector (28) and converted into a received first data signal (RDTA1). Data communication to the primary electronic circuitry (2) is effected by actively modulating the rectified voltage at the secondary side by means of a modulator (30) in response to a second data signal (SDTA2) to be transmitted. The resulting fluctuations in the flyback voltage across the primary winding are detected by means of a second peak detector (32) and converted into a received second data signal (RDTA2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.