Motor speed control circuit
US4465958A · kind A · utility
6Cited by
4References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1982 |
| Grant date | Aug 14, 1984 |
| Priority date | — |
| Expiry date | Apr 26, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/288
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for a direct current trolling motor powered by a storage battery includes a transistor placed in series between the motor and the battery, a selector switch, and one or more voltage regulating devices such as zener diodes. The selector switch includes a movable or wiper element connected to the battery, and a plurality of contacts, one of which connects the battery directly to the motor, and one of which is unconnected. At least one contact is connected to a zener diode connected to the base terminal of the transistor, to regulate the speed of the motor in a stepwise manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.