Circuit arrangement for transmitting a supply voltage and a control signal
US4949066A · kind A · utility
5Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 9, 1988 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | May 9, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08C19/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
With the invention a supply voltage and a control signal are to be supplied via a two-conductor cable to the power stage of a solenoid valve. For this purpose pulse-width modulation is employed, i.e. in a microcomputer the adjusting signal is converted directly as pulse-width-modulated signal via a power stage to an AC voltage. The control signal is obtained from the pulse width in the power stage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.