RC relaxation type tone control circuit

Posted on Mar 28, 2007

Circuit shown in Figure 1-560 RPi is treble control potentiometer. Because C3, C4 is larger than cl, C2 capacity, so high-frequency signals, Pat, C4 can be regarded as a short

RC relaxation type tone control circuit
Click here to download the full size of the above Circuit.

circuit. So treble adjustment circuit can be simplified as in Figure 1-57. When the arm is moved to the top RPi point A, due RPi resistance is much greater than Rz, RPI, C2 branch can be regarded as open, so Figure 1-57 can be equivalent to FIG. 1-58 (a). Because cl terms of bass and midrange, can be regarded as open, so the frequency rate is relatively low, V2/V1 foot 2 Ri + 2 feet) 0 Figure 1-58 (a) for high frequency, q the capacitance is very small, high-frequency signal number can go through, and therefore, with respect to the volume treble bass t is increased. when the frequency is high to a certain extent, ct can be regarded as a short circuit, V2 is almost equal to the o Figure 1 - VI 58 (b) to enhance the properties (a) circuit curve, solid line is the exact value of the control characteristics of the dotted line is an approximation. start turning the treble frequencies fHI 1/2 rrClRi, whereby point start, frequency per liter twice as high lift signal increases about 6dB;, annoyed by the lift characteristic curve into a flat corner frequency, H2 (Ri + Rz)/2, arRiRzC1 Assuming that Ri 10R2, then when, iO. when the frequency increases 10 times larger than the transmission voltage relative increase 20dB (10 times).

Leave Comment

characters left:

New Circuits



Popular Circuits

12 Volt 20 Amp Solar Charge Controller
Lego Double Rotation Sensor
light activated police siren using 555 timer
Telephone operated remote
From the same period and vehicle route map