High speed, step-switching AC line voltage regulator with half-cycle step response
US3970918A · kind A · utility
12Cited by
4References
6Claims
0Family size
Inventor
Key dates
| Filing date | Jan 13, 1975 |
| Grant date | Jul 20, 1976 |
| Priority date | — |
| Expiry date | Jan 13, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/20
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An AC line voltage regulator having a cross-coupled memory circuit that interlocks up and down counter logic channels in a manner that successive stepping in the same direction is accomplished in half-cycle steps, while oscillatory stepping between two adjacent ranges is limited to full cycle steps to prevent any DC component in the regulated output. An alternate circuit uses a dual gating circuit in a bi-directional counter to achieve the same regulation characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.