Impedance matching speaker wire system
US8150074B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2008 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Feb 2, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An impedance matched connection is provided between a load and a power source that outputs signals within a predetermined frequency range. A coaxial line has a predetermined characteristic impedance and an inner conductor, an outer conductor, and an insulator the two conductors. Each conductor has a first end electrically connectable to output terminals of the power source. A compensation circuit has an adjustable impedance, a first terminal electrically connected to a second end of the inner conductor and to a first terminal of the load, and a second terminal electrically connected to a second end of the outer conductor and to a second terminal of the load. The compensation circuit is sufficiently adjustable to attain, for a pulse having a rise time/fall time faster than those associated with the predetermined range of frequencies, a combined impedance and load that is substantially equal to the characteristic impedance of the coaxial line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.