Speed control circuit of a direct current motor
US6353705B1 · kind B1 · utility
23Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1999 |
| Grant date | Mar 5, 2002 |
| Priority date | — |
| Expiry date | Jul 26, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/937
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A speed control circuit of a direct current motor comprises a switching regulator IC 10. The switching regulator IC 10 is composed of a reference voltage generator 12 which generates a reference voltage of 5V, a first operational amplifier OP1, a second operational amplifier OP2, a third operational amplifier OP3, a triangular wave generator 14 which generates a triangular wave, and a transistor TR1. The speed control circuit is constructed using a general switching regulator IC; therefore, it is possible to cheaply and readily manufacture the speed control circuit of the direct current motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.