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ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 Quad operational amplifier, DIP-14 | | | | | J3, J4, J5 | 3 | 10uF | Electrolytic capacitor | | | C10 | 3 | A1M | \*\*Potentiometer, 16 mm vertical board mount 3PDT miniature toggle switch ON-ON | | Screws, nuts, and spacers (see [build notes](build.md | | Tayda | A-1955 | | | | C6, C7, C8, C9 | 4 | 100 nF | Unpolarized capacitor | | J3, J4, J5 | 3 | 22k | Resistor | | R3, R7 | 3 | A1M | Potentiometer | | J1 | 1 nF | Unpolarized capacitor | | R15, R20, R22 | 3 | 1nF.

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