Production of small tube amplifier 02

Shown is a block diagram of the original radio and the modified amplifier
.
    The electrical principle is shown in Figure 1-27, which is a typical
single-tube Class A amplifier circuit. One
channel in the picture is the audio amplifier circuit of the original radio, and the other
channel is an added audio amplifier. The added components
are the tube 6P1 and the output transformer, as well as some
resistors and capacitors . The cost of the components is less than 40 yuan. Delete the capacitor with the number "Dong" in the original circuit, and replace the remaining component values ​​according to the icon values
. The resistor power is 1/2W unless marked. The audio input port can be plugged into a VCD player, recording socket,
radio tuner, etc.