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MR2520 Datasheet(PDF) 5 Page - Shindengen Electric Mfg.Co.Ltd |
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MR2520 Datasheet(HTML) 5 Page - Shindengen Electric Mfg.Co.Ltd |
5 / 7 page P.05 All Rights Reserved Copyright (C) SHINDENGEN ELECTRIC MANUFACTURING CO., LTD. 2002 Password Vol.02-06-e MR2000 Series 3-3 Protection Circuits Fig.6 Resonance Condenser Discharge Current at ON Load-Shorting Protection Inclusion of a load current reduction circuit enables reduction in heating under load and alleviates stress on the device. Unnecessary Discharge current reduced 1 Protection Against Malfunction at ON The Leading Edge Blank (LEB) prevents malfunctions in the over-current detect circuit due to discharge current in the partial resonance condenser at ON. 2 Protection Against Malfunction at OFF Inclusion of the ON-dead timer prevents malfunctions at OFF. This function ensures that resonant oscillation due to the leakage inductance and the resonance condenser at OFF, are recognized as trigger signals, and trigger input is then masked to prevent switching ON again. 3 Over-current Protection Over-current protection for the device consists of pulse-by-pulse over-current protection to detect primary current, and a limitation on the ON width. 4 |
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