Electronic volume controller

Details Electronic volume controller Electronic volume controller

1992-04-24

1993-06-01

Stephan, Steven L.

Electricity: power supply or regulation systems

External or operator controlled

Using an impedance as the final control device

333 81R, 301540, 323297, G05F 308

Patent

active

052163555

ABSTRACT:
A main ladder attenuator has a series of resistors and switches for connecting corresponding resistors to an output. The controller has an auxiliary ladder attenuator connected to the main ladder attenuator in series and having a series of resistors and switches. Each of the resistors of the auxiliary ladder attenuator is provided for interpolating between the adjacent resistors of the main ladder attenuator.

REFERENCES:
patent: 3519930 (1970-07-01), Bradley
patent: 4012688 (1977-03-01), Blackburn et al.
patent: 4118700 (1978-10-01), Lenihan
patent: 4280089 (1981-07-01), van de Plassche et al.
patent: 4549131 (1985-10-01), Kusazaki
patent: 4810949 (1989-03-01), Schiemenz

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