Universal input circuit including opto-isolator and retriggerable monostable multivibrator
US5789960A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 4, 1996 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Sep 4, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B19/054
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A universal input circuit which responds to a wider range of input voltages by eliminating the problem of heat dissipation in the input section of the circuit. The universal input circuit includes an input section and an output section connected by an opto-isolator for electrically isolating the input section from the output section. The input section of the universal input circuit is configured to turn on in response to an in-range DC input voltage activating the opto-isolator to produce a signal which drives the output section of the universal input circuit. A retriggerable, monostable, multivibrator is included in the output section of the universal input circuit which supplies an output in response to an in-range AC input voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.