This is a design circuit for Hi-Fi tone control circuit. This circuit is used for Hi-Fi tone control in amplifier. This is the figure of the circuit.
To buffer op-amp operated feedback type tone control circuit, this circuit uses 2N3684 JFET. The 2N3684 JFET is implemented on this circuit because it has low noise characteristics and provides the function of a high input impedance. [National Semiconductor Application Note]
To buffer op-amp operated feedback type tone control circuit, this circuit uses 2N3684 JFET. The 2N3684 JFET is implemented on this circuit because it has low noise characteristics and provides the function of a high input impedance. [National Semiconductor Application Note]
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