SCHALTUNGSANORDNUNG ZUM SELBSTTAETIGEN ANPASSEN DER LAUTSTAERKE MINDESTENS EINES LAUTSPRECHERS AN EINEN AM LAUTSPRECHERORT HERRSCHENDEN STOERGERAEUSCHPEGEL FUER RUNDFUNKEMPFAENGER, INSBESONDERE AUTORADIOS

SCHALTUNGSANORDNUNG ZUM SELBSTTAETIGEN ANPASSEN DER LAUTSTAERKE MINDESTENS EINES LAUTSPRECHERS AN EINEN AM LAUTSPRECHERORT HERRSCHENDEN STOERGERAEUSCHPEGEL FUER RUNDFUNKEMPFAENGER, INSBESONDERE AUTORADIOS

In a circuit which matches the speaker input signal in a car radio to the then-present noise level, an additional RC circuit is interconnected between the speaker input terminal and the input of the volume control element. Sudden increases in the speaker input voltage following a modulation pause wh...

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1. Verfasser: WIEDEMANN KURT
Format: Patent
Sprache:ger
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BASIC ELECTRONIC CIRCUITRY
CONTROL OF AMPLIFICATION
ELECTRICITY
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description In a circuit which matches the speaker input signal in a car radio to the then-present noise level, an additional RC circuit is interconnected between the speaker input terminal and the input of the volume control element. Sudden increases in the speaker input voltage following a modulation pause which cause a high increase in the gain of the volume control circuit will counteract this gain, thereby preventing the excessive increase in speaker sound output following such a modulation pause which took place in the known circuits. Zener diodes to limit the voltage at the volume control elements in dependence upon the battery output voltage and to a value such that the output stage driving the speaker will not be overdriven are also provided.
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subjects BASIC ELECTRONIC CIRCUITRY
CONTROL OF AMPLIFICATION
ELECTRICITY
title SCHALTUNGSANORDNUNG ZUM SELBSTTAETIGEN ANPASSEN DER LAUTSTAERKE MINDESTENS EINES LAUTSPRECHERS AN EINEN AM LAUTSPRECHERORT HERRSCHENDEN STOERGERAEUSCHPEGEL FUER RUNDFUNKEMPFAENGER, INSBESONDERE AUTORADIOS
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