Circuit arrangement for the wireless transmission of control signals to the control paths of controlled semiconductor valves
US3946389A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1974 |
| Grant date | Mar 23, 1976 |
| Priority date | — |
| Expiry date | Dec 5, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/088
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention concerns a circuit arrangement for the wireless transmission of control signals to the control paths of controlled semiconductor valves, particularly of thyristors, which are preferably usable in a rectifier for high voltage. The control signals are provided for the modulation of a high-frequency transmitter which is disposed at some distance from high frequency receivers each containing a demodulator, whose output signal is delivered to the control path of a semiconductor valve. In order to ensure reliable and interference-proof firing of the semiconductor valves, if the distance between the high-frequency transmitter and the high-frequency receiver is large, there is provided, a frequency-modulated high-frequency transmitter as the high-frequency transmitter. The carrier frequency of the frequency modulated transmitter is in the range of 10 MHz to 50 GHz and has a transmitting antenna provided with a reflector which is directed toward receiving antennas with which the individual high-frequency receivers are equipped. The demodulator contained in each high-frequency receiver comprises a filter which is tuned to the modulation frequency associated with the control sig…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.