Driver circuit for tone generator
US4183278A · kind A · utility
10Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1979 |
| Grant date | Jan 15, 1980 |
| Priority date | — |
| Expiry date | Jan 22, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B3/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A driver circuit for a tone generator that is adapted to cause the tone generator to produce a pleasant sounding chime. The circuit comprises high and low frequency oscillator circuits whose decaying sawtooth type outputs are summed and modulated to produce the desired chime effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.