Impedance matching cable system for electronically coupling musical instruments to amplifiers
US5585767A · kind A · utility
Inventor
Key dates
| Filing date | Apr 27, 1995 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Apr 27, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H1/0058
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An impedance matching cable system for electronically coupling a musical instrument to an amplifier. The musical instrument has at least one signal output conductor and a common conductor. A field effect transistor (FET) having gate, source and drain electrodes is connected to a bipolar direct current voltage supply having a pair of voltage end point connections and a center point voltage connection by connecting the source electrode to one of said voltage end point connections, and the current control device connecting the drain electrode to the other voltage end point connection. The center voltage connection point is connected to the common conductor and a coupler AC voltage at the drain electrode to the amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.