Walter Kowalczyk

US Patent:

43191843, Mar 9, 1982

Filed:

Aug 25, 1980

Appl. No.:

6/181118

Inventors:

Walter Kowalczyk - North Huntingdon PA

International Classification:

G05F 302

US Classification:

323354

Abstract:

A remote control precision step attenuator for providing a desired amount of attenuation in the transmission channel of an audio signal. The attenuator includes a counter which provides a binary output count representative of the desired attenuation. An input applied to the counter can cause a stepwise increment or decrement to the output count of the counter. A control circuit responds to the binary output count in order to produce an attenuation control signal. Attenuation circuitry, coupled within the transmission channel is controlled by the attenuation control signal in order to apply the desired amount of attenuation into the channel. The attenuation circuit can be a resistance pad having sections each of which are switched into and out of the transmission channel by relays responding to the counter binary count output.