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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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HM9923PR Fiches technique(PDF) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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HM9923PR Fiches technique(HTML) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd |
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4 / 6 page  4 RECOMMENDED APPLICATION DIAGRAM AC – AC supply voltage source С1 – capacitor C= 0.1uF ± 10 % D1 – microcircuit L1 – inductor (coil) Inductor feature L, mH, is calculated by formula: L = O dI F U N 15 , N – Quantity of diodes in LED string, pcs.; VF – LED forward voltage for nominal current, V; dIO – LED circuit permissible current ripple, mA LED1 – LEDN – LEDs (light emitting diodes) with nominal current: - 20 mA for HM9921 application; - 50 mA for HM9922 application; - 30 mA for HM9923 application VD1 – high-voltage diode with breakdown voltage not less 500V and forward current: - not less 25.5 mA for HM9921 application; - not less 63.0 mA for HM9922 application; - not less 38.2 mA for HM9923 application / / Shenzhen H&M Semiconductor Co.Ltd http：//www.hmsemi.com |
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