Ignoramus8975 wrote:

On 2010-06-08, Michael A. Terrell wrote:

Ignoramus8975 wrote:

On 2010-06-08, Robert Swinney wrote:
Too large a filter cap -- excessive surge current -- blown rectifier, or worse. Iggy, these things
are well covered in Eng. design handbooks.


Bob, would not the transformer limit current?


Not for a single motor. A transformer's ability to limit current is
based on the DC resistance of the windings.



OK, what motor?


The motor you are trying to test? Its current loading is below what
the transformer can supply, so the transformer can not limit current.
That's why the circuit breakers in your home are rated for 10,000 A
interrupting capacity.


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