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BackLib="ao_symbols" part="TL074" description="Quad operational amplifier, DIP-14 A-1135 2 8 pin DIP socket A-004 4 Knobs Screws, nuts, and spacers (see [build notes](build.md)) | | Tayda | A-1121 | | 1 | B10k | Potentiometer | | | | | | J1 | 1 | 10R | Resistor | | | J1 | 1 | Conn_01x02 | SIP socket, 2.54 mm, 1x10 | | | | | | | C7, C12, C13 | 1 | 1 | Conn_01x04 | Pin header, 2.54 mm, 1x4 Light emitting diode, 5 mm LED 5 mm Small Signal NPN Transistor, TO-92"/>