If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Exponential charging v linear output

Squ · 2013-01-03 10:20:16

Gents, As the charging time of a capacitor is exponential, how then is the output of an integrator linear? Thanks. S

03-01-2013 11:20AM

#1

Squ

Closed Accounts Posts: 1,082

✭✭✭

Join Date: January 2012

Posts: 1020

Gents,

As the charging time of a capacitor is exponential, how then is the output of an integrator linear?

Thanks.
S

0

Welcome!

It looks like you're new here. Sign in or register to get started.

Comments

#2 04-01-2013 01:54AM

whizbang

Registered Users, Registered Users 2 Posts: 2,033

✭✭✭

Join Date: September 2009

Posts: 1976

Charging of a cap from a constant voltage is exponential.
Constant Current charging is linear.
but most simple circuits use such a small portion of the charge curve, that's its ok to call it linear

0
#3 04-01-2013 05:20AM

Squ

Closed Accounts Posts: 1,082

✭✭✭

Join Date: January 2012

Posts: 1020

whizbang wrote: »

Charging of a cap from a constant voltage is exponential.
Constant Current charging is linear.
but most simple circuits use such a small portion of the charge curve, that's its ok to call it linear

Thank you for that.

I'm doing an online basic electronics course, and the query popped out at me..

Tutor couldn't help!

Cheers,

S

0
#4 05-01-2013 02:18AM

Chet T16

Registered Users, Registered Users 2 Posts: 2,320

✭✭✭

Join Date: April 2007

Posts: 2226

Taking a small section as being linear is common across all sorts of non linear devices. Google small signal model and you'll find plenty of info.

What course are you taking?

0

Welcome!

It looks like you're new here. Sign in or register to get started.