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KM-18-2触发模块主要用于晶闸管单相、三相全控桥触发控制电路中。模块以TCA785、J555等元器件构成,其内部电路如图1所示。 同步电压从模块的(13)脚输入,锯齿波的斜率取决于接在模块(11)脚的电位器调定值。模块④脚和②脚输出脉冲的宽度由外接于模块⑦脚的电容决定。⑦脚不外接电容时,输出脉宽约为550μs。当⑦脚与地直接相连时,输出宽脉冲,适于感性负载使用。在模块
KM-18-2 trigger module is mainly used for thyristor single-phase, three-phase full-bridge trigger control circuit. Module to TCA785, J555 and other components, the internal circuit shown in Figure 1. The sync voltage is input from the module’s (13) foot. The slope of the sawtooth depends on the setting of the potentiometer connected to the module’s (11) foot. Module ④ feet and ② feet output pulse width by the external capacitance of the module ⑦ feet decision. ⑦ feet without external capacitor, the output pulse width of about 550μs. When ⑦ feet directly connected with the ground, the output wide pulse, suitable for inductive load. In the module