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PCB should be 10 nF. Putting everything together is a ceramic 104 power cap like C5, C6, C8, C9 | 5 | 2N3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92 Switch, triple pole double throw D Switch, three position, dual pole double throw, separate symbols | | | | | | J12 | 1 | TL074 | Quad Low-Noise JFET-Input Operational Amplifiers, DIP-8/SOIC-8/TO-99-8"/>

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