Variable pulse width precision pulse generator
US5220203A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1990 |
| Grant date | Jun 15, 1993 |
| Priority date | — |
| Expiry date | Nov 21, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K7/08
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A variable pulse width precision pulse generator includes a constant current source for producing a number of different constant currents; a charge storage device whose voltage output is proportional to the charge stored; and gating means responsive to an input signal for controlling the time during which the constant current source charges the charge storage device to produce a ramp voltage; a first comparator responsive to the voltage ramp for detecting a first level of the ramp; a second comparator responsive to the voltage ramp for detecting a second level of the ramp; and logic means responsive to the comparators for providing a precision pulse during the presence of the input signal between the occurrence of the detection of the first and second levels of the ramp by the comparators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.