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A-2939 | | L1 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 | | | J1 | 1 uF | Unpolarized capacitor | | R14, R15, R18 | 3 | 4.7k | Resistor | | J10 | 1 | TL074 | Quad Low-Noise JFET-Input Operational Amplifiers, DIP-8/SOIC-8/TO-99-8"/> Low-Power, Quad-Operational Amplifiers, DIP-14/SOIC-14/SSOP-14 Dual Operational Amplifiers, DIP-14/SOIC-14 | | | | | | C13 | 3 | A1M | Potentiometer | | | | | | | Tayda | A-4349 | | C10 | 1 uF | Unpolarized capacitor | | U3 | 1 | LM358 | Low-Power, Dual Operational Amplifiers, DIP-14/SOIC-14"/> Small Signal NPN Transistor, TO-92 KK254 Molex header 2.54 mm spacing R23, R24, R25, R27 | 4 | 100nF | Unpolarized capacitor | | | Q1, Q2, Q3 | 3 | 22k | Resistor | | C4, C5 | 2 | 1N5817 | Schottky diode | | | | | | | | R9, R11, R13 | 3 pin connector, PD-30, http://www.cui.com/product/resource/pd-30.pdf connector 3-pin PD-30 power DIN shielded Right-angle standard banana jack, http://www.caltestelectronics.com/images/attachments/P315100rH_drawing.pdf DEUTSCH DT header 12 pin 3-pin CPU fan Through hole straight socket strip, 1x22, 2.00mm pitch, 4.2mm pin length, single row Through hole socket strip SMD 1x08 1.27mm single row (from Kicad 4.0.7), script generated Through hole socket strip THT 1x14 1.00mm single row Through hole socket strip SMD.

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