Audio Electronics - 140 Valve (Tube), Opamp, And Transistor Guitar Amplifier And Effect Device Schematics Collection.pdf

文档介绍：Name:Four-Band EQ Manufacturer / Designer: PAiA Electronics Revision: 9/21/95 Model # 9303
Originally designed by Jules Rychkebusch
10k 10k 10k 10k 10k 10k 10k 10k 100
6 6 6 6
Input - 8 - 8 - 8 - 8 Output
IC1a IC2a IC3a IC4a
5 + 5 + 5 + 5 +
cut boost cut boost cut boost cut boost
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100k
IC1b IC2b IC3b IC4b
2 2 2 2
- 1 - 1 - 1 - 1
3 + 3 + 3 + 3 +
10k 10k 10k 10k
4k7 4k7 4k7 4k7 IC1 - IC4 : 5532
47k 47k 47k 47k 47k 47k 47k 47k

100k 100k 100k 100k
100k
4k7 4k7 4k7 4k7
Freq. 35-680Hz Freq. 150-3kHz Freq. 450- Freq. 750-15kHz
12VAC
100 mA 1N4001 150 V+
+ + Pin 8, IC1 - IC4
100uf 100uf
+ +
330 100uf 100uf
V-
1N4001 150 Pin 4, IC1 - IC4