电源供应电路：电源供应电路部分电路是向整个电路板中各个单元电路提供能量的一部分电路，它工作在高电压、大电流的环境下，是最容易出故障的一部分电路。电源供应电路的功用是：将220VAC或380VAC交流电转换成电路板所需的各种不同等级、输出电压恒定的±5V 、12V、 15V、18V、24V等级别的直流电。输入接口电路：输入接口电路是电路板和外界进行信息交换和沟通的一部分电路，它可以将人们想要对电路板所说的话或要办的事转化成电路板中微处理器能够识别的电信号。
MSPC-68866800
例如：我们在监控温度高低时，你如果用咱们平常人与人交流的语言说给微处理器听，温度高了，请把它调低一些，微处理是听不懂咱们说的话的，这时，我们可以通过接口电路先用热敏电阻或热电偶元件将温度信号转成电信号，然后在对所转换出电信号进行处理，就可以得到微处理器可以识别的电信号了。这样的话微处理器明白了我们要它处理的事项后，他就可以按照我们的意图去做了。其它的像光照度、压力、风力、液位、位置、等信号都是同样道理。
MSPC-68866800
Power supply circuit: The power supply circuit is a part of the circuit that provides energy to each unit circuit in the entire circuit board. It works in high voltage and high current environments and is the most prone part of the circuit to malfunction. The function of the power supply circuit is to convert 220VAC or 380VAC AC power into various levels of DC power with constant output voltage of ± 5V, 12V, 15V, 18V, 24V and other levels required for the circuit board. Input interface circuit: Input interface circuit is a part of the circuit board that exchanges information and communicates with the outside world. It can convert what people want to say or do to the circuit board into electrical signals that the microprocessor in the circuit board can recognize.
MSPC-68866800
For example, when monitoring the temperature, if you speak to the microprocessor in the language of ordinary human communication, and the temperature is high, please turn it down a bit. The microprocessor cannot understand what we are saying. In this case, we can first convert the temperature signal into an electrical signal through an interface circuit using a thermistor or thermocouple element, and then process the converted electrical signal, You can obtain electrical signals that the microprocessor can recognize. In this way, once the microprocessor understands the tasks we need it to handle, it can proceed according to our intentions. The same applies to other signals such as illumination, pressure, wind speed, liquid level, position, etc.
MSPC-68866800
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MSPC-68866800
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