A part tester can be configured to prevent part warranty fraud by requiring the input of unique part identifying information into a part tester prior to initiation of the testing. By configuring the tester and the information input correctly, warranty fraud can be minimized.

 
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< Transformer over-current protection with RMS sensing and voltage fold-back

< Switching device driving apparatus and DC/DC converter incorporating the same

> Switching power supply unit and controller IC thereof

> Band-gap type constant voltage generating circuit
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