Loudspeaker overload circuit
US4122507A · kind A · utility
11Cited by
4References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 12, 1977 |
| Grant date | Oct 24, 1978 |
| Priority date | — |
| Expiry date | May 12, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R3/007
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An overload circuit for a loudspeaker system which indicates the overload and also automatically reduces the load on the speaker system to prevent damage in which a rectifier followed by a smoothing circuit is connected in parallel with the speaker and supplies an output to a magnetic coil for energizing a magnetic switch on overload so as to place a load dropping means in series with the speaker during overload. The load dropping means might be a lamp which visually indicates the overload condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.