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| R109, R111, R113 | 3 | 1k | Resistor | | | Q1, Q2, Q3, Q4, Q5 | 5 | 2N3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92 R16, R17, R19, R20 **Potentiometer, 9 mm pots, you're on your own! * The SPDT toggle switch - this needs a TLC7524/AD7524.

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