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Low-Noise JFET-Input Operational Amplifiers, DIP-14/SOIC-14 | | | | Tayda | A-3545, A-3489, or A-3499\*\*\* | | Tayda | A-159 | | Tayda | A-1605 | | | | | | | | U3 | 1 | 2_pin_Molex_connector | 2 Fireball/Fireball.kicad_prl | 2 | 10k | Resistor | | | C1 | 1 nF | Unpolarized capacitor | | | | | | | | | | | U1 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 | | | | | | R9, R11, R13 | 3 | 1k | Resistor | | | | | | S3 | 1 | SW_DPDT_x2 .

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