Bill of Material for BASIC Equalizer Used Part Type Designator Footprint Description ==== =================== ========== ========== ================================================== 2 1K R51 R52 AXIAL-0.3 1%, 0.125W resistor 1 2K R50 VR5 Potentiometer 6 4N25 U11 U12 DIP-6 Optoisolator U13 U14 U15 U16 6 6R8 R8 R34 R35 AXIAL-0.5 1%, 0.125W resistor R36 R37 R38 6 10K R1 R39 R40 AXIAL-0.3 1%, 0.125W resistor R41 R42 R43 2 15P C25 C26 RAD0.2 Ceramic capacitor 50V 12 47K R53 R54 AXIAL-0.3 1%, 0.125W resistor R55 R56 R57 R58 R59 R60 R61 R62 R63 R64 9 100N C12 C13 RAD0.2 Ceramic capacitor 50V C18 C19 C20 C21 C22 C23 C24 6 220R R44 R45 AXIAL-0.3 1%, 0.125W resistor R46 R47 R48 R49 2 220U C14 C17 RB.2/.4 Electrolytic capacitor 35V 1 ADG508 R65 DIP16 Analog switch 1 CON16 J16 SIP-16 16X2 lines LCD display with HD44780 controller 1 CRYSTAL 4MHz U21 XTAL-1 Crystal 1 LM7805 U17 TO-220 Linear 1A,5V regulator 6 MTP3055V Q1 Q2 Q4 TO-220 N channel low cost mosfet Q5 Q6 Q7 1 NMA0515D DCDC2 DCDC TRACO DC-DC converter Vin 5V, Vout 15V 3 OP290 U18 U19 DIP-8 Low Cost, Dual Amplifier (LM358 is cheaper and OK) U20 1 PIC16F876 U22 DIP28N 8-Bit CMOS Microcontrollers With A/D Converter 2 SW SPST S3 S4 RAD-0.2 Normally open push button 6 LED D1 D2 D3 D4 D5 D6 RAD-0.2 3mm RED LED General ASSEMBLY materials ========================== 1 PCB 1 Plastic box for Eurocard-size PCB 1 RED 4mm receptacle for power supply 1 BLACK 4mm receptacle for power supply 7 Black wires with small/mediun crocodile connector (sold the other side directly on PCB)