Process and circuit for exciting solenoid coil
US4485424A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1982 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Sep 29, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/725
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process and circuit arrangement for exciting a solenoid coil to operate an iron core. Power from an AC power source is full-wave rectified, and then allowed to flow to a solenoid coil by a switch element located between the full-wave rectification circuit and the solenoid coil, which coil is made electrically conductive only for each short period of time corresponding to the top and its vicinities of the voltage wave-form of the rectified power so that the current is allowed to flow to the solenoid coil. Therefore, no current flows to the solenoid for each period of time corresponding to the trough and its vicinities of voltage wave-form of the rectified power. Thus, excitation and non-excitation of the solenoid is continuously alternated to give a dither effect to the iron core associated with the solenoid coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.