N Cook wrote:

I need to get a rough idea of the amperage capability of a small 5V SM ps
before attaching it to its load, to simulate, just in case the regulation is
kapput.

Does anyone know how the volume of the smps hf transformer is related to
power throughput or any other method?


Core size is also affected by the switching frequency. Is there a
model number on the supply?


It uses a TOP66 of sufficient rating to drive a few hundred watts across but
the ps is relatively low power , but unknown rating.

The one in question is only about 20mm cube.


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida