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| 1 | TL074 | Quad operational amplifier, DIP-14 | | | | 8 | 1N4148 | 100V 0.15A standard switching diode, DO-35 Standard switching diode, DO-35 Push button switch, generic, two pins | | | | R1, R10, R11 | 3 | A1M | Potentiometer | | Tayda | A-2939 | | | | Q1, Q2, Q3, Q4, Q5 | 5 | 100nF | Ceramic capacitor | | S2 | 1 | 10nF | Unpolarized capacitor | | | | | | | Tayda | A-1157 or A-2425 | | | | | | R4, R6, R7, R30, R31 Switch, dual pole double throw | | | | | | S3 | 1 | 10 nF | Unpolarized capacitor | Tayda | A-1847 | | | J3, J4, J5 | 3 | 10uF | Polarized capacitor | | | J2.

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