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DJYPVR
具有以下几点特点：1、产品能有效预防白蚁、鼠类对电缆的危害，性能可靠长久，无需其他辅助方法；2、电缆产品内无防蚁鼠电力电缆一、产品特点及用途本产品适用于在蚁鼠危害比较严重，且有绿色环保要求的场所，特别是埋地和管道敷设的电力系统输配线路。
Working capacitance: average 52 + / - 2nF/km
HYV, HSYV indoor large logarithmic communication cable is introduced: SPC switching station MDF and exchange between users of audio connection, also can be used for other audio connections between communication equipment, can support the low rate of data transmission, application support voice, digital telephone, fax, program-controlled switches, digital equipment connection, telecom integrated system and main branch line, inner conductor wire diameter (mm) : 0.40, 0.50, 0.60, 0.70, 0.80, 0.90, logarithmic (on) : 10-500
| mine shaft communication cable | inclined well and level roadway communication line | mine shaft or inclined well communication line execution: mt818.14-1999 brief description: name code:? Communications cables for coal mines MH(HU) copper core Omitted polyethylene insulation Y? Aluminum - polybonded layer A? Poly inner sheath Omit? Blue flame retardant polyurethane sheath V? Steel wire armored blue flame retardant PVC outer sheath 32? Main models, names, specifications and USES :MHYV (HUYV)? Mine polyurethane, flame retardant polyurethane sheath communication cable? 2-5? 7/0.28? Used for street level,? Inclined alley and mechanical adit???? Coal safety certificate no. : 20055108,20055121,20024126-2005mhy (HUY)? Mineral polyurethane, aluminum/polyurethane sheath, flame retardant polyurethane sheath communication cable? 10-100? 1.0/1/0.81? For use as communication lines in inclined Wells and alleys. Coal safety certificate no. : 20034088-2005mhya32 (HUYA32)? Mineral poly-insulation, aluminum/poly-bonded layer, galvanized steel wire armor, flame retardant poly-chloride sheath communication cable? 10-100? 1.0/1/0.81? Used as a communication line in a coal mine shaft or inclined shaft. Coal safety certificate no. : 20034086-2005
可见，反馈系数具有电导（电阻的倒数）的量纲，称为互导反馈系数。,串联电压负反馈由3是同相比例运算电路。从反馈类型来看，反馈电路自输出端引出接到反相输人端，面后经电阻RL接“地”。设为正，则也为正.此时反相输入端的电位低于输出端的电位，但高于“地”电位，和的实际方向与电路中的参考方向相反。经RF和R1分压后.反馈电压=—R1它是的一部分。由输人端电路可得出，差值电压，即削弱了净输入电压(差值电压)，故为负反馈。
Computer cable USES: this product is widely used in electricity, metallurgy, petroleum, chemical industry, textile and other departments of detection and control in a computer system or automated devices, as well as general industrial computer. Features: rated voltage UO/U is 300/500v. Allowed working temperature does not exceed 70 ℃, laying temperature not lower than 0 ℃, allowed bending radius should not less than 12 times of cable outer structure of soft cable should be no less than eight times outside the cable, copper tape screened cable shall be less than 15 times of cable diameter. Product code and significance: dj-electronic computer cable y-polyethylene v-polyvinyl chloride R- represents multiple strands of soft core p-copper wire shielding p2-copper belt shielding P3 aluminum plastic compound
RVVP2-22铜芯聚氯乙烯绝缘和护套钢带铠装软电力电缆敷衍设在室内、电缆沟、管道、直埋等能承受较大机械外力等固定场合。DJYV(R)P聚乙烯绝缘铜丝编织总屏聚氯乙烯护套计算机用屏蔽(软)电缆。DJYPV(R)聚乙烯绝缘铜丝编织分屏聚氯乙烯护套计算机用屏蔽(软)电缆。
ZR-BPYJVP3交联聚乙烯绝缘聚氯乙烯护套铝聚酯复合膜绕包屏蔽变频电力电缆。阻燃电缆：由于电缆线路起火带来的危害,促使****都把电缆的阻燃性放到日益重要的位置上，我公司生产阻燃电缆见表1－2。适用于交流额定电压U0/U=450/750V供电，监控等回路中。
产品型号：WDZ-RYYP低烟无卤多芯屏蔽电缆电缆结构：导体：无氧裸铜丝绝缘：低烟无卤环保型屏蔽：铜丝或镀锡铜丝编织屏蔽护套：低烟无卤环保型颜色：黑色(RAL9005)灰色(RAL7001)工作电压：450/750V测试电压：＜0.5mm²：2000V≥0.5mm?：2500V使用温度范围：-20℃。
NH-KFFP2氟塑料绝缘和护套铜带绕包屏蔽耐火控制电缆。NH-KVDVD低烟低卤阻燃聚氯乙烯绝缘和护套耐火控制电缆。NH-KVDVDP低烟低卤阻燃聚氯乙烯绝缘和护套铜丝编织屏蔽耐火控制电缆。NH-KVDVDP2低烟低卤阻燃聚氯乙烯绝缘和护套铜丝编织屏蔽耐火控制电缆。
主要技术指标1.电缆应经受环境温度下工频电压试验3kV，5min不击穿2.电缆的透光率应符合下表电缆外径D（mm）透光率（%）≥电缆外径D（mm）透光率（%）≥D>40705