The audio circuit high quality complete low-noise 6-band graphic equalizer circuit is based on monolithic integrated circuit manufactured by linear TL074 .
6 Channel Graphic Equalizer Circuit with TL074
The EQ circuit is very easy to build and has a good quality. You can do it with component stereos portable tape recorders, radio cassette recorders, radios, etc. ..
Operational amplifiers on one chip. 6-band equalizer for a channel can easily by externally connecting capacitors and resistors, which are formed for (resonance frequency) UPDATE. Series connection of two makes TL074 (6 to 10 bands) and multi-band. It is very stable in the capacitive load. Maximum voltage 20V max VCC must not be exceeded. The operating voltage is about 5 to 15V. Use of force with pin-room shorted, the causes are the destruction or damage to the IC. Use when mounting the IC on the board of directors or, make sure that the pin does not contain spaces Lot, shorted, etc.
Electronic Part
IC1-2=TL074
C1=1uF 100V
C2=15nF 100V
C3=150nF 100V
C4=33nF 100V
C5=8.2nF 100V
C6=1nF 100V
C7=470pF 100V
C8=680nF 100V
C9=680nF 100V
C10=150nF 100V
C11=39nF 100V
C12=8.2nF 100V
C13=2.2nF 100V
C14=470nF 100V
R1=47Kohms
R2-5-18=150Kohms
R3-4=10Kohms
R6….17=10Kohms
R19=100Kohms
RV1…..6=100Kohms Lin .
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