With Instructables you can share what you make with the world and tap into an ever-growing community of creative experts.
share what you made with text, photos, video, and files
gather your favorite instructables together
We have a be nice comment policy. Please be positive and constructive.
There are many theoretically oriented people who want to be more exact than necessary. The person asking wants simply to replace the battery with charged capacitor. The answer is:
so: if you have 1,2V battery with 0,27mAh capacity, than you can replace it with the capacitor of 1F charged to let's say 2V. Your circuit should cope with it. After consuming 0,27mAh from the capacitor it will get discharged down to 1V which should be also ok for your circuit.
* check the minimum and maximum voltage for your circuit. Take the difference between those two,
* multiply it by 0,2777 per each needed mAh
and you will get needed capacity in F.
And remember to start with fully charged capacitor up to the maximum possible voltage.
sorry one correction:
*check the minimum and maximum voltage, take the difference
* divde 0,277 (not multiply) by the min/max voltage difference
you will get number of F.
Hi,I'm trying to replace a 2.4v 500mah nicd battery with an equivalent or higher energy dense capacitor. What rating of voltage and capacitance in farad do it need? Thanks
How many kilderkins in a MeV?
if you use a resister to lower the voltage out of the capacitor will it have a higher f or amp hour?
Measuring Capacitor Health (tan δ vs ESR)
How to repair capacitors on computer motherboards and other electronic devices.
Let's learn about Super Capacitors! (A Practical Guide To Super Capacitors)
How to repair an Xbox Remote Control - Decoupling Capacitor Fix
Make your own Super Capacitor Flashlight
Measure Capacitance with Arduino
Make a Capacitor with stuff you already have (how it works+calculations)
Custom Capacitor Values
Fix a Malfunctioning LCD Power Supply
Posted:Mar 18, 2011
Download our new apps for iOS, Android and Windows 8!
© 2015 Autodesk, Inc.
By clicking "Create Account" you are indicating that you have read and agree to the Terms of service.
Already a member? Login »
Enter the email associated with your account and we will send you your username and a temporary password.
Not a member? Sign Up »