What is leakage current?

AC/DC Power Adapters — Desktop & Wall-Mount, clearly explains what leakage current is in switching power supplies.

What is Leakage Current?

Leakage Current

Leakage current refers to the current that flows from a commercial power source (AC100V input) through the enclosure (main body case) to the ground.

This is a specification to prevent electric shock when a person touches the main body while using AC/DC Power Adapters — Desktop & Wall-Mount connected to a power outlet.

In the past, appliances like washing machines were made of metal, so when the insulation between the body and internal circuits deteriorated, it was not uncommon to receive an electric shock when touching the washing machine with wet hands.

This occurred because the deterioration of insulation caused the AC100V power to be induced into the enclosure, and when a person touched it, the current flowed through the body to the ground, resulting in a tingling sensation.

Most AC/DC Power Adapters — Desktop & Wall-Mount have a case made of insulating resin, so even if insulation deterioration occurs due to an impact such as a drop, it is unlikely that touching the case will cause an electric shock. However, the DC plug on the output side has exposed metal components, so there is a risk of electric shock if touched.

Of course, a properly functioning AC/DC Power Adapter — Desktop & Wall-Mount is insulated between input and output, so touching the DC plug will not result in an electric shock.

The above specification shows that the leakage current is 0.25mA or less based on safety standards.

Our company also specializes in AC/DC Power Adapters — Desktop & Wall-Mount for medical use with reduced leakage current. We have a wide lineup, so feel free to contact us with any questions.

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