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实用新型
CN204304981U 一种电压转换电路 失效 - 权利终止

一种电压转换电路
摘要：
本实用新型公开了一种电压转换电路，包括电平转换电路和与光电编码器相接的波形整形电路；波形整形电路的输出端与电平转换电路的第一信号输入/输出端相接且二者之间串接有第一控制开关；电平转换电路的第二信号输入/输出端与控制器的I/O口相接，电平转换电路的第一信号输入/输出端与连接端口P2相接且二者之间串接有第二控制开关；波形整形电路包括施密特触发器U1；电平转换电路包括一个NMOS管和与NMOS管相接的二极管。本实用新型电路简单、设计合理且接线方便、投入成本低、使用效果好，不仅能对光电编码器所输出数字信号进行电压转换以能满足控制器的输入电平要求，而且能对控制器所输出信号的电压进行转换。
摘要（英）：

The utility model discloses a voltage converting circuit. The voltage concerting circuit comprises a level converting circuit and a waveform shaping circuit connected to a photoelectric encoder. An output terminal of the waveform shaping circuit is connected with a first signal input/output terminal of the level converting circuit, and a first control switch is connected in series between the output terminal of the waveform shaping circuit and the first signal input/output terminal of the level converting circuit. A second signal input/output terminal of the level converting circuit is connected with an I/O port of a controller, and a second control switch is connected in series between the first signal input/output terminal of the level converting circuit and a connecting port P2. The waveform shaping circuit comprises a Schmitt trigger U1. The level converting circuit comprises a NMOS tube and a diode connected to the NMOS tube. The voltage converting circuit is simple in structure, reasonable in design, convenient to wire, low in cost and good in usage effect. The voltage converting circuit can convert a voltage of a digital signal output from a photoelectric encoder to meet the requirement of an input level of a controller, and the voltage converting circuit can convert a voltage of a signal output from the controller.

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