Why does the 24 volt switch power leak?
Induction of real, as long as the power supply, whether power or switching power supply, main transformer low voltage side generally will have an equivalent capacitance, can be regarded as second kinds of conditions, there will be leakage current trace, this situation can not be avoided.
High side and low side switching power supply (that is, across the 2 side of the coupler, the general circuit board the 2 side will have a clear distance segmentation) there will be a general EMI capacitor (power supply may also be connected in parallel with a high resistance resistor (Shao Jian)), which is the switching power supply has the cause of leakage current.
The ground has 2 y capacitor neutral grounding connection, (fire ---||--- to ---||--- zero) this way if the socket grounded is no problem, but if the virtual connection wire socket, then ground with 110V (may be higher and lower) equivalent potential, if the appliance is metal shell grounding may, the entire shell are charged, pencil will be bright, feels will feel.
