Pulse signal generator having delay stages and feedback path to control delay time
US5243240A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1992 |
| Grant date | Sep 7, 1993 |
| Priority date | — |
| Expiry date | Oct 13, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2005/00228
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A pulse signal generator comprising a plurality of stages of delay gates connected in series for receiving an input pulse signal and generating an output pulse signal, each stage consists of a differential connection circuit and an emitter follower circuit, and has a signal delay time which is changed by varying the voltage that controls the current flowing in the current sink of the emitter follower circuit. The pulse signal generator further comprises a delay time signal generator receiving the input and the output pulse signals to generate a comparison pulse signal of a pulse duration corresponding to the delay time between the input pulse signal and the output pulse signal; a reference pulse signal generator for forming a reference pulse signal; and a correction voltage generator for forming a DC voltage corresponding to the difference between the pulse duration of the comparison pulse signal and the reference pulse signal; wherein the DC voltage of the correction voltage generator is connected to the current sink of at least one of the emitter follower circuits to vary the delay time per stage of the delay gates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.