Standard switching diode, DO-35 Operational amplifier, DIP-8 Quad operational amplifier, DIP-14 | | | J11 | 3 | 1k | Resistor | | Tayda | A-826 | | | | Tayda | A-1157 or A-2425 | | R16, R17, R19, R20 **Potentiometer, 9 mm or 16 mm vertical pots. You.
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