A power amplifier circuit suitable for beginners

The power amplifier includes a front-stage control circuit t power amplifier circuit 6. The circuit is shown in Figure 5-98. The left side of the dotted line is the pre-stage circuit, and the right side
is the power amplifier circuit.
    The power amplifier circuit uses Philips' high-quality dual-channel integrated power amplifier integrated circuit TDA1521 as the core component
. It has two identical amplifiers inside, including short-circuit and overheating protection functions, and it has the characteristics of large output power ,
low distortion, good channel balance performance, and fewer external components. When Vcc-±16V, RL-8fl,
the output power of 12W can be obtained . There is more introduction about this integrated block, so I won’t say more here. The following focuses on the front-
end control circuit made with LM1035 .