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Moteur de recherche de fiches techniques de composants électroniques |
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Moteur de recherche de fiches techniques de composants électroniques |
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FS9922-DMM3 Fiches technique(PDF) 26 Page - Fortune Semiconductor Corp. |
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FS9922-DMM3 Fiches technique(HTML) 26 Page - Fortune Semiconductor Corp. |
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26 / 35 page  FS9922-DMM3 Rev. 1.1 26/35 12.18 Transistor hFE Test Please refer to Diagram 30 for Transistor hFE Test. VDDA E C B SA VDDA C E B SA 1.5M 100 R23 100k 1.5M 100 R23 100k PNP Type Transistor NPN Type Transistor Diagram 30: Transistor hFE Test 12.19 Capacitance Measurement Please refer to Diagram 31 for Capacitance Measurement. Capacitance Measurement is to create oscillation by charging and discharging the measured capacitance through R33 or R32, and to find out the capacitance value by calculating the oscillation cycle. The capacitance measurement reading value can be calibrated through the adjustment of VR3 or VR4. J10 and J7 are mode switches, which are closed during Capacitance measurement. RCAP2 SMV SGND PTC 1.2k FS9922-DMM3 COM Cap 3/4VDD 1/4VDD VDD AGND J7 J10 CMP DO+ DO+ DO+ DO- DO- DO- + - CX R25 900k R22 1k R33 1k R32 45k VR3 10k VR4 2k RCAP1 J8 Q1 9013 Q2 9013 Typical Wave at Input 3/4VDD 1/4VDD VDD Tdo Diagram 31: Capacitance Measurement |
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