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变压器和分压器都可用来改变电压,但二者在本质上是不同的。一、工作原理:变压器是利用电磁感应规律制成的,它可以把交流电的电压升高(升压变压器)或降低(降压变压器);而分压器是滑动变阻器的一种分压接法,是通过改变电阻丝的长度来改变电阻的大小,再利用电阻的分压原理来达到改变电压的目的。二、变压特点:
Both transformers and voltage dividers can be used to change the voltage, but the two are fundamentally different. First, the working principle: The transformer is made using the electromagnetic induction law, it can increase the voltage of the alternating current (step-up transformer) or reduce (step-down transformer); and the voltage divider is a kind of partial pressure connection of the sliding rheostat. It is through changing the length of the resistance wire to change the size of the resistance, and then use the voltage divider principle of the resistance to achieve the purpose of changing the voltage. Second, the pressure characteristics: