what is the difference between these two supplies

Thread Starter


Joined Feb 1, 2018
I am wondering how will these two differ, One is Ac to DC converter module, second one is SMPS.

Link1(AC to DC module)

when link 1 is available in a small size than Link2(SMPS). Under what circumstance we have to use Link1 and link2.

I understand that SMPS is 5watt, Link1/Module is 3 watt.
I am looking for the technical differences.


Joined May 3, 2013
There will not be much difference between the two, technically.
Link 1 is compact, maybe with the pass transistor built-in into the controller IC.
Link 2 is with external pass transistors.
As mentioned in #2, the difference is mainly the powe handling capacity.