Inverted tone controller ----- Tone Control

Inverted tone controller, Tone Control Keywords: inverted tone controller Inverted tone controller This inverted tone control circuit is based on the principle of high and low audio signals, even if high, the bass adjustment potentiometer knob is placed in the same position, and the audio frequency resounding characteristic curve can be proximity. The circuit is shown in the drawings. The IC1B, IC1C is a high tone signal and a bass signal inverted buffer amplifier, RP1 and RP2 respectively adjust the signal level of the input, the bass inverted phase buffer amplifier, and inverted the phase amplifier, the maximum input is not disturbed. The AC signal is 1V. C1 ~ C3, R9 ~ R11 constitute a treble frequency sound network; C5 to C7, R12 to R14 constitute a bass frequency sound network. If the circuit reduces the resistance value of R3 and R4 in the appropriate range, it can increase the amplitude adjustment range of high, bass network frequency response characteristic intersection, such as the electric resistance value shown in the circuit diagram, the amplitude adjustment ranges from about 20 dB. The coupling capacitance C4, C8 outputs high, low audio signals of inverted processing, and is mixed and applied to the load resistor R15, and the irradiation of the amplifier IC1D is irradiated, and then the acoustic capacitor C9 and the capacitive load limit resistor R16 are output. R17 acts as a stable output DC in the 0V potential. Test the frequency response curve of the circuit, when the two potentiometers are placed in the intermediate position, the high and weak frequency response characteristics are slightly swing up and down in the 0DB gain. Turn the scroll bar to view the full circuit ------

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