Remote control phase shift circuit for thyristor
US3956688A · kind A · utility
3Cited by
7References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 23, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Oct 23, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/919
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A control circuit for a motor includes a thyristor connected to apply current to the motor, and a phase shift circuit for controlling the thyristor including a series RC circuit connected in parallel with the thyristor. The junction of the resistor and capacitor is connected to the control electrode of the thyristor. A transformer has a primary winding connected in parallel with the capacitor, and a variable resistor, which may be remotely located, connected in series with the secondary winding, for varying the phase shift of the phase shift circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.