Greeting to all,
Recently I bought an AC-DC 24V/4A SMPS module on ebay (pictured below), which I plan to use with my T12 Soldering Iron. There is a Y1 capacitor connecting the output negative to the mains (through the diode bridge), as already described in another post. The SMPS module is a 2 wire type, i.e. there is no Earth connection on the PCB, so I guess this makes it Class 2, Unearthed PSU.
Being the kind of person who wouldn't stake his life on a Chinese Y cap, I decided to do a little redesign, but I am not a PSU or EMI expert, so any comments and suggestion will be highly appreciated (and will probably prolong my days on Earth, if correct).
The plan is to disconnect the Y capapacitor from the Live part of the circuit and wire it to Earth on the power plug. Two things to note:
1. The Soldering Iron tip is already connected to Earth through 1.5M wirewound resistor.
2. The Earth connection on the AC outlet is actually connected to the Neutral wire.
Do you think that this reconnection of the Y capacitor will increase the safety of the SMPS or not?