| R20, R22 | 2 pin Molex connector 2.54 mm spacing"/> Standard switching diode, DO-35 Pin header 2.54 mm 2x5 Dual Operational Amplifiers, DIP-14/SOIC-14 | | Q1, Q2, Q3 | 3 | 1nF | Unpolarized capacitor | | | | R9, R11, R13 | 3 | 22k | Resistor | .
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