Remote control precision step attenuator

Details Remote control precision step attenuator Remote control precision step attenuator

H - Electricity

03

H

330/86

H03H 7/25 (2006.01) H03H 11/24 (2006.01)

Patent

CA 1169131

ABSTRACT OF THE DISCLOSURE A remote control precision step attenuator for providing a desired amount of attenuation in the trans- mission 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. -29-

388732

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