The production of "Walkman" power connector 03

If the player itself does not have a tone function, the high-fidelity DC control tone controller shown in Figure 5.90 can be used . The integrated circuit
used in this circuit adopts the special tone volume control integrated circuit TDA7630 from Toshiba Corporation of Japan . This circuit uses ordinary single potentiometers to achieve dual-channel control. 6 This circuit can be designed in the balanced position. RP1. RP2 and RP3 are used to adjust volume, treble, and bass respectively This circuit is very good at adjusting treble and bass. , the bass is not muddy, and there is also a negative feedback tone controller that makes the treble sound harsh when it reaches its peak. This circuit is still designed to be powered by dual power supplies. The power supply is introduced from the power amplifier to the three -terminal voltage regulator CW 7806/ CW 7906. After stabilization, it supplies power to the TDA7630. During production, please note that the heat dissipation terminal of 7806/7906 should not be short-circuited. This is because the heat dissipation terminal of 7806 is connected to ground; and the heat dissipation terminal of 7906 is connected to the negative power supply.