矿用选号电话耦合器制造技术

本实用新型专利技术提供一种矿用选号电话耦合器，其包括隔爆外壳和电路板，电路板安装在隔爆外壳内，防爆外壳设有电压输入接口，电路板包括高压隔离电路和低压耦合电路，所述高压隔离电路与电压输入接口连接，所述高压隔离电路包括输入电路、驱动电路以及继电器隔离电路，继电器隔离电路与低压耦合电路的输入端连接，所述低压耦合电路设有与耦合器并联连接的汇接端口以及用于对电话机提供电源的电话接口，本实用新型专利技术通过与选号电话机配接，不需经过交换机，只需将所有电话机并接于耦合器输出端，即可组成小型的通话系统，实现话机之间一对一通话，或一对多方通话，其电路特点是，采取中低频耦合，高频阻隔方式电路，通话清晰，噪音小，维护简单方便。（*该技术在2023年保护过期，可自由使用*）

Mine selection telephone coupler

The utility model provides a mining pick telephone coupler, which comprises flameproof enclosure and a circuit board, the circuit board is installed in the flameproof enclosure, explosion-proof enclosure with voltage input interface, circuit board including high voltage isolation circuit and low voltage coupling circuit, the high-voltage isolation circuit and voltage input interface connected to the high voltage isolation the circuit includes an input circuit, drive circuit and the relay isolation circuit, relay isolation circuit and low voltage coupling circuit is connected with the input terminal, the low voltage coupling circuit is connected with a coupler parallel connected ports and for providing telephone interface power supply to the telephone, the utility model with the selected telephone adapter, without switch. Just put all the telephones and connected to the coupler output, can be composed of small talk system, realized between a pair of a call The utility model is characterized in that the utility model is characterized in that the utility model adopts the middle and low frequency coupling, the high-frequency blocking circuit, the conversation is clear, the noise is small, and the maintenance is simple and convenient.

【技术实现步骤摘要】

【技术保护点】
一种矿用选号电话耦合器，其包括隔爆外壳和电路板，所述电路板安装在隔爆外壳内，所述防爆外壳设有电压输入接口，其特征在于：所述电路板包括高压隔离电路和低压耦合电路（5），所述高压隔离电路与电压输入接口连接，所述高压隔离电路包括输入电路（1）、驱动电路（3）以及继电器隔离电路（4），所述继电器隔离电路（4）与低压耦合电路（5）的输入端连接，所述低压耦合电路（5）设有与耦合器并联连接的汇接端口以及用于对电话机提供电源的电话接口。

【技术特征摘要】

【专利技术属性】
技术研发人员：陈献杨，郑虎，熊淼光，
申请(专利权)人：浙江正安防爆电气有限公司，
类型：实用新型
国别省市：