亚洲 欧美 图片 自拍 视频

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          Small active audio circuit diagram

          Small active audio circuit diagram

          This circuit is suitable for computer speaker active amplifier or Walkman power connector. It has the characteristics of simple and reliable, cheap and easy to find components, easy to make and so on. The circuit schematic diagram is shown in the following figure:

          The power transformer T1 is a transformer for a recorder whose output is AC 12V / 5W. If you don't listen often, you can add a power switch in front of the transformer.
          Reference voltage: Under normal operating conditions, the bias voltages of the bias voltage diodes D5 and D6 are + 0.69V; the Vbe driving the amplifier Q1 is + 0.48V, Vce is + 5.04V; the Vbe of the upper power amplifier tube Q3 is + 0.61V; Vce is + 7.74V; Vbe of the lower power amplifier tube Q2 is -0.61V; Vce is -5.72V; the power supply voltage is 13.41V, the midpoint voltage of the audio output terminal is 5.67V, and the power consumption is low.

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          Zibo Yuhai Electronic Ceramic Co., Ltd. , https://www.yhpiezo.com

          亚洲 欧美 图片 自拍 视频
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