How to master the key points of rectifier diode circuit analysis

In the analysis of the rectifier diode circuit, we need to seize the important part, then the key point of the rectifier diode circuit analysis is reflected in it?
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The key points in the analysis of rectifier circuits are that the positive half and negative half of the AC input voltage are assumed to be added to the positive electrode of the rectifier diode respectively.
On the other hand is added to the rectifier diode cathode diode using one-way conductive characteristics, determine the rectifier diode is on or off, a general rectifier circuit can output voltage, cut-off voltage output is not, this is a key analysis of various rectifier circuit working principle of.