Formulas describing Filter Capacitors in Rectifier Circuit

Thread Starter

ModoExpress

Joined Nov 1, 2009
3
Hey, I'm doing a pre-lab for a 2nd year eece course and I can't find the appropriate formulas needed to calculate the filtor capacitor for certain rectifier circuits: half wave rectifier, full wave rectifier using a center tap transformer, and full wave rectifier using a bridge circuit.

Any help or online resources would be great!

thanks in advance.
 

Jony130

Joined Feb 17, 2009
5,419
hmm, only equation you need is
C = Q/V = ( I*t)/V
where
I - load current
t - discharge time 1/50Hz (20ms) for half wave rectifier and 1/100Hz (10ms) full wave rectifier or 1/60Hz and 1/120Hz for countries with 60Hz mains.
V - capacitor ripple voltage
 
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