March 26, 2014

FCC Technician Exam Question Of The Day (T6D01 )

Q) Which of the following devices or circuits changes an alternating current into a varying direct current signal?

A) Rectifier

NJ2X Notes:
This is the basic rectifier circuit.  AC enters the circuit on the left passes through the bridge recitifier (4 diodes) and is changed into DC.  The capacitor bleeds off AC artifacts thereby providing filtering to the DC voltage.