Re: Testing a transformer for shorted turns
Yep, you are quite right.
I replace all the 'lytics under 47uf and use an ESR tester on the rest. The one published in Elektor a few years back has been worth it's weight in gold!
I then put the lamp in series with the primary supply with a small load on the output to keep them happy. The resistance of the fillament stays low unless there is a problem and helps to prevent the switching transistor failing if there is.
It's not a 100% safeguard but then what is with SMPS
SM
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