Introduction:
PA05-5W refers to the PASS-ACA circuit design. The overall sense of hearing of PASS ACA is better than PASS ZEN or JLH1969, especially at the intermediate frequency. It is rich and moist. The disadvantages are also obvious, that is, the power is small, and the magnification is small (about 6.5 Multiplying magnification), the thrust is very limited, but it is suitable for making desktop amplifiers, and pushing small speakers around 90DB, still has certain fun and characteristics (the human voice is beautiful).
PCB size: 76mm*120mm
Input voltage: AC 0-15V, 0-15V (the total power of the transformer is not less than 80W)
Output power: 5W+5W
Gain: 6 times
Debugging method:
1. Measure the voltage at points A and B.
2. Adjust the 5K adjustable resistor so that the voltage at points B and C is equal to half of the voltage at points A and B.
NOTE: This is a Bare PCB, and all parts need to be matched by yourself.
