产品描述：特性阻抗100欧姆，导体为2*2*24AWG多股镀锡电解铜丝绞合而成，花色绝缘护套宜于安装识别，铝箔/聚酯带总体****屏蔽，附加独立多股绞合镀锡铜丝接地导体，工业灰色PVC外护套，标准的1对RS-485通讯电缆，特性阻抗为120欧姆，导体为2*24AWG多股绞合镀锡铜丝，PE绝缘介质，由。
型号：ZRC-HYAT阻燃通信电缆，WDZ-HYAT无卤阻燃通信电缆，ZR-HYAT阻燃通信电缆，MHYAT矿用通信电缆技术特点：防火阻燃低损耗低色散结构紧凑良好的综合机械性能应用范围：适用于矿山、电厂、市内、近郊及局部地区，起到防火阻燃作用。
KFVRP22氟塑料绝缘聚氯乙烯护套钢带铠装屏蔽控制软电缆。
KFFV22氟塑料绝缘和内护套聚氯乙烯外护套钢带铠装控制电缆。
KFFRV22氟塑料绝缘和内护套聚氯乙烯外护套钢带铠装控制软电缆。
KVVP铜芯聚氯乙烯绝缘聚氯乙烯护套编织屏蔽控制电缆。
2、敷设时环境温度≥0℃。
3、最小弯曲半径：4、无铠装层电缆，应不小于电缆外径的6倍。
5、有铠装或铜带屏遮结构电缆，应不小于电缆外径的12倍。
6、有屏遮结构的软电缆，应不小于电缆外径的6倍。
7、型号及名称：KVV铜芯聚氯乙烯绝缘聚氯乙烯护套控制电缆煤矿用阻燃通信电缆MHYV/MHYBV/MHYVP/MHY32一、产品用途及特点本产品适用于矿山、井下环境监控系统中传输通信信号。
铠装通信电缆结构：1、基本电缆：任何单护套或双护套结构的填充型和非填充型电缆。
2、铠装通信电缆机械保护层：53型采用0.15mm厚的轧纹钢带，纵包于基本电缆之上，两边搭接。
钢带表面经涂塑处理，以防腐蚀和水份侵入。
下图五是分立元件组成的反相器振荡电路，这个电路可以通过瞬时极性法进行分析，两个三极管放大电路相耦合，经过倒相两次输入和输出就是同相关系。
可以将R4换成扬声器或led，在输出端可以输出振荡信号。
这个电路中各元件VTVT2为9013管，RR2=27K-100K，RR4=2K-5.1K，Ec=3v-6v，CC2=0.1-10uF；保证各个三极管工作中放大状态，电路必能起振。
图五分立元件反相器组成的振荡电路CD4069振荡电路有两种基本形式，还有一种改进电路；1.振荡电路形式之一，如下图六，该电路的特点是电源的波动将使频率不稳定，适合于小于100kHz的低频振荡情况。
When the data is transmitted at a high speed, the transmission line effect appears. At this point, the characteristic impedance of the load must match the output, otherwise, the echo will reflect and cannot work normally. Even though in some cases, can be done by resistance in the end of the parallel matching impedance matching, but in the long run, when the resistance change and come back down for some reason, besides, the disadvantages of this also leads to increased power consumption.
电缆的推荐允许弯曲半径如下：无铠装电缆，应不低于电缆外径的6倍；铠装或铜带屏蔽电缆，应不低于电缆外径的12倍；屏蔽软电缆，不低于电缆外径的6倍。
控制电缆泛指设备仪表供电和信号控制。
代表型号：KVV和KYJV，还有其它控制线等等。
KVVP2聚氯乙烯绝缘，聚氯乙烯护套铜带绕包屏蔽控制电缆同上。
KVV22聚氯乙烯绝缘，聚氯乙烯护套内钢带铠装控制电线敷设在室内、电缆沟中、管道内及地下，能承受较大的机械外力使用。
KVV32聚氯乙烯绝缘，细钢丝铠装聚氯乙烯护套控制电缆敷设在室内、电缆沟中、管道、竖井内及地下，能承受一定的拉力作用。
The solid insulated filled cable is suitable for the urban telecommunication lines of the local telecommunication network and the special network lines connected to the public network. Mainly used for pipeline laying. The inner and outer surfaces of the cable core and the shield layer are filled with oil paste and poured to prevent water intrusion. The mechanical and electrical properties of the cable remain unchanged under conditions of 30~C - 60~C.
| mine shaft communication cable | inclined well and level roadway communication line | mine shaft or inclined well communication line execution: mt8 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. : 200550024126-2005mhy (HUY)? Mineral polyurethane, aluminum/polyurethane sheath, flame retardant polyurethane sheath communication cable? 10-100? ? For use as communication lines in inclined Wells and alleys. Coal safety certificate no. : mhya32 (HUYA32)? Mineral poly-insulation, aluminum/poly-bonded layer, galvanized steel wire armor, flame retardant poly-chloride sheath communication cable? 10-100? ? Used as a communication line in a coal mine shaft or inclined shaft. Coal safety certificate no. :
Crane or forklift should be used for the loading and unloading of cables. It is forbidden to run flat or lay flat. For installation of large cables, cable laying cart should be used to avoid external damage or abrasion caused by manual dragging. If the cable cannot be laid in time for some reason, it should be stored in a dry place to prevent sunlight from exploding and water entering the end of the cable. Note: the installation of wire and cable should be familiar with the performance of wire and cable installation personnel or full-time technical personnel, if there are still unclear matters, ball related technical department or technical department of our factory.
为了理解电路工作原理，在看图分析时可以采用直流等效电路法、交流等效电路法，对电路进行静态、动态分析。
直流等效电路法就是在输入信号为零时，各级放大电路在直流电源作用下的工作状态，实际上就是找出直流通路，确定各级电路在静态时的偏置电流和电压。
交流等效电路法就是在输入信号不为零时，确定电路的交流信号通路及工作状态。
应当注意的是，在采用等效电路法分析是，要根据元器件性质给予特别处理。
如电路中含有电容、电感这两种元件时，电容具有“隔直通交”的作用，电感具有“隔交通直”的作用。
Conditions of use: 1: using temperature (℃) : - 2:40 ~ + 60 ℃ relative humidity: 98% at 40 ℃ 3: install the laying temperature is not low, such as: 15 ℃ 4: allows the minimum bending radius: indoor is not less than five times, ten times outdoor.
在阻燃型系列产品中，成功地应用了隔氧技术，不仅0.6/1KV的聚氯乙烯绝缘和交联聚乙烯绝缘阻燃电力电缆能达到GB/T12666.5《成束电力电缆燃烧试验方法》中A类，额定电压6/10KV及8.7/15KV交联聚乙烯阻燃电力电缆也能达到A类高阻燃要求且有较大裕度。