Friday, 22 February 2019

Measuring an AC-voltage at the ouput of a full bridge rectifier


I've a full bridge rectifier and I put the following function into it:



5sin(100πt)


So, at the output I get:


|(52Vd)sin(100πt)|


Where $V_d$ is the voltage over one diode.


Now, why do I measure (with a Fluke multimeter) a DC-voltage of $1.4$ volts and an AC-voltage of $0.5$ volts. Why do I measure an AC-voltage, is it not completely DC?




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