Oscillation circuit having electrostatic protective circuit
US6147564A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1999 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Mar 4, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G19/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An oscillation circuit including an electrostatic protective circuit connected between a signal path and this constant voltage V.sub.reg. It comprises a first electrostatic protective circuit portion that causes any electrostatic voltage of a first polarity that invades the signal path to be selectively diverted through a diode to the constant voltage V.sub.reg side of the circuit, and any electrostatic voltage of a second polarity that invades the signal path to be selectively diverted through another diode to the ground side. This ensures that the oscillation circuit is not affected by fluctuations in the power voltage from the main power source, enabling it to oscillate at a stable frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.