Audio amplifier with the TA7368 for radio equipment
For self-made radio sets and receiver circuits, circuits with the LM386 IC are very popular. This somewhat more modern circuit of a receiver audio part, which works with the Japanese IC TA7368, is a suitable alternative. It works in a wide operating voltage range from 2 to 10 volts. The amplifier can be set up in a very small space thanks to the low external wiring effort and since the IC is in the SIL housing (single-in-line).
With an operating voltage of 6 volts, an output power of 720 mW is achieved with a 4Ω speaker; with an 8Ω loudspeaker it is still 450 mW. With 40dB (= 100-fold) a high voltage gain is achieved, so that the amplifier can be connected directly to modulators with a low audio output level without additional pre-stages.