Temperature independent trigger pulse analysis circuit
US4117355A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Mar 11, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K3/033
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
To obtain input signals as a function of various types of input signals, R/C circuits are used to charge or discharge a capacitor, the charge state of which is sensed by a threshold stage. To render such circuits essentially independent of temperature changes, in spite of different response levels of the R/C circuit and the threshold stage, a second R/C circuit and threshold stage are connected in parallel with the first, one threshold stage being responsive to charging direction of the capacitor, the other threshold stage being responsive to discharging direction of the capacitor, and the overall output signal being a combination of the output signal from both threshold stages so that increase of the signal components of the combined output signal from one threshold stage, due to temperature increase, for example, will be balanced by a decrease of the signal component from the other threshold stage, thereby rendering the overall output essentially temperature independent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.