030929 0727 - Harry Bloomfield wrote:

In article ,
says...
|
| Anyone have specs on this thing? If not, anyone have any suggestions re how
| I might be able to roughly determine the secondary amperage ratings without
| letting out any magic smoke?
|

Gradually increase the load on one of the secondaries, whilst measuring
the voltage and current. When the voltage decreases by about 5% below
the open circuit voltage, note the level of current flowing. That will
be the approximate current it is able to deliver.

Anyone care to comment on the 5% rule of thumb?



Also, check the heat generated onto the frame. If you cannot hold your
fingers on the frame because it is too hot, then reduce the load a little
until it is just warm to the touch. A transformer is designed to take a
little heat.