Continue to Site

Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

rectifier capacitance value

Status
Not open for further replies.

qtommer

Member
I'm using a single shunt capacitor as a filter cap out of a centre tapped bridge rectifier. Assuming I want a ripple voltage of 1V, i used the following formula which is a derivation from Q=CV, Q=It and t=1/f

Capacitance = (Load Current ) / (Ripple Voltage * Frequency)

Would this derivation be correct?
 
Not quite. The ripple period t = 1/2f because you are using a full-wave rectifier, where the ripple frequency is 100Hz or 120Hz.
 
oh yeah sorry! i forgot to add the note that the frequency is 100Hz becaue in my area the supply is at 50Hz..thanks for verifying!
 
Status
Not open for further replies.

Latest threads

New Articles From Microcontroller Tips

Back
Top