# Capacitor Discharging Question

Discussion in 'General Electronics Discussion' started by CrazedBinary, Aug 20, 2017.

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Aug 20, 2017
2. ### Electrobrains

259
6
Jan 2, 2012
Sure you can!
You just need paatiiieeenceee...
The probe has 600MΩ internal resistance.

3. ### CrazedBinary

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Aug 20, 2017
How long do you think it would take for say a 500 volt?

4. ### Electrobrains

259
6
Jan 2, 2012
Depends on the size of the capacitor.

Here is a good site where you can calculate the discharge (and charge) characteristics of capacitors:
http://mustcalculate.com/electronics/capacitorchargeanddischarge.php

Example:
In your case, with your probe (600MΩ), a 470μF capacitor charged to 500V, to reach 30V, it would theoretically take 220 hours (9 days!) and look like this:
http://mustcalculate.com/electronic...p?vfrom=500&vto=30&vs=0&c=0.00047&r=600000000

Of course it would take less time than that because the leakage current through the capacitor would discharge it in a fraction of that time.

5. ### tedstruk

475
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Jan 7, 2012
I think I am going to cry... Electrobrain has posted a link to the most useful of all internet calculators... that is a great link... that is the best link on the internet...