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AEW01CC48 bảng dữ liệu(PDF) 43 Page - Astec America, Inc |
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AEW01CC48 bảng dữ liệu(HTML) 43 Page - Astec America, Inc |
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43 / 46 page ![]() USA Europe Asia TEL: 1-760-930-4600 44-(0)1384-842-211 852-2437-9662 FAX: 1-760-930-0698 44-(0)1384-843-355 852-2402-4426 43 6. Input Reverse Voltage Protection Under installation and cabling conditions where reverse polarity across the input may occur, reverse polarity protection is recommended. Protection can easily be provided as shown in following. In both cases the diode used is rated for 2A/100V. Placing the diode across the inputs rather than in-line with the input offers an advantage in that the diode only conducts in a reverse polarity condition, which increases circuit efficiency and thermal performance. 7. Series operating When converters are connected in series to increase the output voltage, diodes should be added as shown in following figure. Choose low forward voltage drop diodes, such as shottky diodes. The reverse voltage of the diode should be greater than the output voltage, and the diode’s turn-on current should be greater than the series load current. The maximum operating output current of the series connection should not be greater than the maximum output current of any single converter. |
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