Methods and systems for trimming a PWM signal
US6226324A · kind A · utility
23Cited by
15References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1997 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Dec 17, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/04
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A pulse width modulation ("PWM") generation circuit is described. The circuit includes a main PWM generator, a trimming signal generator, and a summer. The main PWM signal generator generates a main PWM output which is modified by the summer in accordance with a trimming signal produced by the trimming signal generator. In particular, the main PWM signal may be lengthened, shortened, or preserved by the summer circuit. Accordingly, the main PWM signal is trimmable, without direct modification thereof by using the trimming signal generator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.