Sensor interface circuit
US4137467A · kind A · utility
4Cited by
1References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | May 11, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for interfacing with sensors having a loop current flowing therethrough comprising a current mirror utilizing multiple diode-connected transistors for dividing the loop current into several equal subparts and means connected to said current mirror for producing a latching output signal when the current equal to one subpart of the loop current exceeds a predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.