Electrolytic capacitor unit for audio apparatus
US6510041B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1998 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Feb 27, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/01
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power source of an audio apparatus loaded on a car is a battery with a rated voltage of 12V or more. An electrolytic capacitor unit is utilized as a power source filter in the audio apparatus. As the electrolytic capacitor unit, a given number of aluminum electrolytic capacitors with the same rating is connected in parallel to gain a capacitance of 1 F (farad) or more and an internal resistance of less than 1.0 m&OHgr; as a whole. Thus, the electrolytic capacitor unit can provide, in addition to a large capacitance necessary for a power source filter for an audio apparatus, sufficiently low internal resistance and stable output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.