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    100W pure DC high fidelity power amplifier ----- 100W Power amplifier

     

    100W pure DC high-fidelity power generation, 100W Power Amplifier Keywords: 100W power amplifier circuit, high-fidelity real power generation circuit, HIFI amplifier, A1209, C2911 The author has recently created a power amplifier, using a symmetrical complementary circuit structure, and simultaneous use of all components, it has reliable guarantees of the power amplifier. The input stage is a linearly high-source circuit, which has been made by the composite intermodulance circuit, which is useful to extend the dynamics and improvement of analytics. The power output is a three-level Dalington circuit. Due to the extremely high current gain, it is easy to drive the food. Each level of this unit has a certain level of feedback, so that the open-loop distortion is minimized, while the overall feedback is only controlled around 16 dB. The debugging is also very simple, the adjustment VR1 reduces the first level load resistor to 6V, adjusting VR2 to 0V, adjusting VR3 to make the last level of 100 mA per tube. The medium power tube A1209 / C2911 should be installed in the heat sink. This machine did a test when setting the overall feedback circuit: the feedback point of the left channel circuit was introduced by the A point, so that there was no large loop feedback power amplifier, and the right right channel feedback point was taken out by the B point, that is, the so-called ring Route feedback power amplifier, boot, comparison, you can hear the left-channel sound quality should be obviously better than the right channel, the left voice is extremely pure, the transient response is very good, and the sound of the right channel is a bit turbid, parsing The force is not high. This test believes that there must be a certain reference value for many burning friends.

     

     

     

     

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