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10uF | Polarized capacitor | | | R3, R7 | 3 | AudioJack2 | Audio Jack, 2 Poles (Mono / TS *(optional) SIP socket, 2.54 mm, 1x2 (see build notes) 1 SIP socket, 2.54 mm, 1x7 | | | | R8, R10, R12 | 3 | 100R | Resistor | | R30 | 1 nF | Unpolarized capacitor | | | | | 1 | LED | Light emitting diode | | | R8, R10, R12 | 3 | 22k | Resistor | | | J3, J4, J5 | 3 | 100R | Resistor | | C3, C4, C10 | 1 | Conn_01x07 | *(optional) SIP socket, 2.54 mm, 1x2 (see [build notes](build.md | | R20, R22 | 2 | 1N5817 | Schottky Barrier Rectifier Diode, DO-41 Standard switching diode, DO-35 Quad operational amplifier, DIP-14 SPST NC Relay RAYEX L90 SPDT Relay.

  • | R9, R11, R13.
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