Pulse counting-rate meter
US3984773A · kind A · utility
7Cited by
1References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1974 |
| Grant date | Oct 5, 1976 |
| Priority date | — |
| Expiry date | Jun 6, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosed meter comprises a pulse shaper circuit for forming each input pulse into a voltage pulse having a predetermined pulsewidth, a level control circuit connected to the pulse shaper circuit to produce a voltage including a dc component providing a measure of the frequency of the input pulses, and a low-pass filter dc coupled to the level control circuit. The filter consists of a series resistor, a parallel capacitor and a series feedback type operational amplifier to extract the dc component from the voltage from the level control circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.