| Q1,Q2 | NMOS | N-MOSFET transistor, drain/source/gate |
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| U4-U6,U9,U10,U12 | LM397 | Single General-Purpose Voltage Comparator with Open-Collector Output, SOT-23-5 |
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| U7,U11 | SN74AHC1G08DBVR | Single AND Gate, Low-Voltage CMOS |
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| U8 | SN74AHC1G00DBVR | Single NAND Gate, Low-Voltage CMOS |
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| U17,U18 | SN74AHC1G32DBVR | Single OR Gate, Low-Voltage CMOS |
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| C2,C4 | 10uF | Unpolarized capacitor |
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| C10,C11 | 100uF | Unpolarized capacitor |
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| C13-C26 | 0.1uF | Unpolarized capacitor |
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| J1,J2 | SAMMY-3PIN | |
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| J3,J5 | SAMMY-2PIN | |
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| J4 | SAMMY-5PIN | |
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| R11-R17,R21,R24 | 100k | Resistor, US symbol |
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| R18 | 2.2k | Resistor, US symbol |
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| R19,R22,RV6,RV7 |
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