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Difference between isolation transformer and switching power supply
Release time: 2018-04-11 Click times: 1187 times
Isolation transformer refers to a transformer with electrical isolation between the input winding and the output winding. Its role is to safely isolate people from electrical appliances. Its input, input and output are alternating current, and the switching power supply is an AC to DC transformer; an isolation transformer is a device that uses the principle of electromagnetic induction to change the voltage, current, and impedance. The primary application of isolation transformers is in AC circuits. Switching power supplies are a type of power supply that uses modern power electronics technology to control the time ratio of the switching transistor on and off to maintain a stable output voltage. There are two types of switching power supplies: AC to DC and DC to DC. What is the difference between a switching power supply and an isolation transformer?


1. Efficiency: The efficiency of 400W isolation transformer is 90% -93%, and the efficiency of 400W switching power supply is 78% -85%;


2. Temperature rise: The temperature rise of the 400W isolation transformer is lower than the temperature rise of the 400W switching power supply.


3. The cost of isolation transformer above 500W is lower than that of switching power supply.


4. The isolation transformer itself has no interference, but the switching power supply itself is a high-frequency interference source with high-frequency electromagnetic radiation;
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