Delete comment from: Ken Shirriff's blog

halojones-fan said...

"When a voltage pulse is sent into the transformer, the output diode blocks the output so there is no output - instead a magnetic field builds up. When the voltage input stops, the magnetic field collapses causing voltage output from the transformer."

As a side note, this is how the electrical system in your car produces the high voltage that makes the spark plugs produce a spark.

May 21, 2012, 4:00:58 PM

Posted to Apple iPhone charger teardown: quality in a tiny expensive package