What Formula is Needed to Find the Capacitor Value for a Half Wave Rectifier?

Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
3 replies · 13K views
snowJT
Messages
117
Reaction score
0

Homework Statement



A half wave rectifier is supplying a load current of 100 mA. The input frequency is 60 Hz. Find the capacitor value required to limit the ripple ot 160 mVpp.

Really... I can solve this I'm sure... But I'm wondering what formula I need to use... I've never been shown one in class, and I don't have a textbook, so a little help with a formula would be nice...
 
Physics news on Phys.org
I think the equation you're looking for is [tex]V_r=I_{dc}/fC[/tex].
Where Vr is the ripple voltage, Idc is the direct current, f is the frequency of the supply voltage, and C is the capacitance. But I would do a search for something like "half-wave rectifier capacitor filter" to learn about it and be sure that you agree with it. OK? I don't want to mislead you.