CIRCUIT ARRANGEMENT FOR ELECTRONIC GAIN CONTROL, IN PARTICULAR ELECTRONIC VOLUME CONTROL CIRCUIT
The invention describes an electronic volume control circuit which can be manufactured in integrated circuit form, can be operated at a low battery voltage, has satisfactory input signal compatibility and comparatively low noise. A transistor differential amplifier is provided the emitter lead of wh...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The invention describes an electronic volume control circuit which can be manufactured in integrated circuit form, can be operated at a low battery voltage, has satisfactory input signal compatibility and comparatively low noise. A transistor differential amplifier is provided the emitter lead of which includes a transistor which passes the direct current and the signal current. A negative-feedback path is provided from that collector terminal of the differential amplifier which is not used as a signal output to the input of the transistor included in the emitter lead. |
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