Automatic control power amplifier circuit suitable for voice signal input amplitude
The invention provides an automatic control power amplifier circuit suitable for voice signal input amplitude, which is characterized by comprising an amplifying circuit, a voltage stabilizing circuit, an input circuit, a control power supply circuit and a power amplifier circuit, and the input circ...
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| Hauptverfasser: | , , , , , , , , , , , , , , |
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| Format: | Patent |
| Sprache: | chi ; eng |
| Schlagworte: | |
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| Zusammenfassung: | The invention provides an automatic control power amplifier circuit suitable for voice signal input amplitude, which is characterized by comprising an amplifying circuit, a voltage stabilizing circuit, an input circuit, a control power supply circuit and a power amplifier circuit, and the input circuit is connected with the amplifying circuit in series; the amplifying circuit is connected with the control power circuit and the power amplifying circuit in series; the control power circuit is connected with the power amplifier circuit in parallel; and the grounding end of the voltage stabilizing circuit is connected with the grounding end of the input circuit, and the power supply end of the voltage stabilizing circuit and the power supply end of the control power supply circuit are simultaneously connected with a 12V power supply. Through the automatic control power amplifier circuit, the technical problems that power supply is always kept when a common power amplifier circuit has no signal input, environmenta |
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