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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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P6002ACMC датащи(PDF) 100 Page - Teccor Electronics |
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P6002ACMC датащи(HTML) 100 Page - Teccor Electronics |
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100 / 212 page  High Speed Transmission Equipment http://www.teccor.com 3 - 12 © 2002 Teccor Electronics +1 972-580-7777 SIDACtor® Data Book and Design Guide Protection Circuitry Longitudinal protection is required at the Central Office Terminal (COT) interface because of the ground connection used with loop powering. (Figure 3.14) Two P1800SC MC SIDACtor devices provide overvoltage protection and two F1250T TeleLink fuses (one on Tip, one on Ring) provide overcurrent protection. For the U-interface side of the coupling transformer, the illustration shows the P0080SA MC SIDACtor device used for additional overvoltage protection. Figure 3.14 Pair Gain COT Protection For Customer Premises (CP) and Remote Terminal (RT) interfaces where an earth ground connection is not used, only metallic protection is required. Figure 3.15 shows metallic protection satisfied using a single P3100SC MC across Tip and Ring and a single F1250T on either Tip or Ring to satisfy metallic protection. Tip1 Ring1 P0080SA Tip2 Ring2 Power Source U-Interface Tip Ring P1800SC MC P1800SC MC F1250T F1250T Central Office Terminal (COT) Interface |
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