Electrical control apparatus
US4066940A · kind A · utility
2Cited by
5References
1Claims
0Family size
Inventor
Key dates
| Filing date | Oct 6, 1975 |
| Grant date | Jan 3, 1978 |
| Priority date | — |
| Expiry date | Oct 6, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control apparatus for supplying a load device, such as a motor, from a d.c. supply, by means of semiconductor control devices, particularly controlled rectifiers. A capacitor is charged through the load, through a circuit including one semiconductor control device, and the capacitor is then discharged through the load, direction of current flow through the load the same as the charging current, by a second semiconductor control device. The frequency of operation is variable; the apparatus can be adapted to give current flow always in one direction or always in the opposite direction through the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.