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FLC21-135A Datasheet(PDF) 4 Page - STMicroelectronics |
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FLC21-135A Datasheet(HTML) 4 Page - STMicroelectronics |
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4 / 6 page  FLC21 FAMILY 4/6 Rs S1 Ds c D Th Z R Ic AC MAINS Ic t Fig. 2: BASIC AC MAINS APPLICATION 1/ IGNITION MODE PHASE 1 The AC voltage is rectified by the diode Ds. The ignition energy is supplied by the mains and stored into the capacitor C. S1 c D Th Z R Ic Ic t Ds DC/AC Oscillator Rs Fig. 3: BASIC DC APPLICATION PHASE 2 At the end of the phase 1, the voltage across the capacitor C reaches the avalanche threshold of the Zener diode Z. Then, a current flows through this Zener diode into the gate of the thyristor Th which is triggered. The thyristor turn on generates an alternating current through the capacitor C. Its positive parts flow through the capacitor C, the primary of the HV transformer and the thyristor Th. Its negative parts of the current flow through C, D and the primary of the H.V transformer. |
Similar Part No. - FLC21-135A |
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Similar Description - FLC21-135A |
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