Simple Super Capacitor


Introduction: Simple Super Capacitor

About: Hello All. A great thing in all our life is SCIENCE. Whether it may be any branch but it studies and gets off a solution for the world. We all being scientist made many instructables , Let us go forward and ...

In our day to day life we need capacitors for many electrical circuits. In fans we need conduncer which is type of capacitor. For science students who are making circuits frequently use many capacitor. Here I made a capacitor which has 1.5 volts storage and stores it for 5-10 minutes. It is very simple to make and easy to understand.

Step 1: Materials Required:

1.An old cell. [AA 1.5v battery].


3.Tic Tac small box.

4.Carbon rod. [can be removed from cell].[used as +ve electrode].

5.Iron rod. [used as -ve electrode].


7.Cutting blade [for removing cell].

8.mno2 can be removed from cell.

Step 2: Procedure:

Take a tic tac box and fill it with the solution of water and salt. Now remove a cell carefully and take out mno2 and carbon rod with out breakage of it. Mix the mno2 to the solution in tic tac box. Make two holes to the cap one is for carbon rod and other for iron rod. Close the cap and fix the rods in it. Now it is completed. Test it with a multimeter or any load. Here iron will act as -ve terminal and carbon as +ve terminal.

Step 3: How to Test: Results

Take a multimeter and connect its terminals to super capacitor. Red wire to carbon and Black wire to iron rod.Once connect a battery to super capacitor and remove it soon. Now see the readings in the multimeter. It gradually decreases,note the time also. readings will drops for 5-10min and then it stop at a certain value.[I noticed 0.47v].

Step 4: Conclusion:

It is very useful which decrease waste produced by cell and batteries after their dead. You will get some doubt. Your question is "all the materials in cell are not used." The other thing in this cell is used in my other instructable - "Rechargable Battery- 1.5v with no cost". This is a capacitor which was made with house hold waste items. I have converted it to rechargable battery in my next instructable - "Rechargable Battery- 1.5v with no cost" . Visit it too. I hope you will like it. If you like please vote me in the contest and favorite it.



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    17 Discussions

    I don't know why you keep insisting this is a capacitor. What you have made is actually one of the first electric cells, a Galvanic or Voltaic Cell, named after their inventors. See the reference for further details and for a fuller explanation of how they work. If this was a capacitor it would work with both electrodes having the same material, which this design will not do.

    You also seem to not understand about how a capacitor would actually discharge if you were measuring it using a voltmeter. A charged capacitor will discharge through a load with an exponential decay. It will continue to decay. It will not drop down and then stop at a certain value, it will continue to decay to lower and lower voltages.


    Sir, I agree with you and I have seen the web page. but according to my observations I concluded it as a super capacitor. But my physics sir also said that it is a capacitor. I will accept with you but please explain why you are saying it is a battery.


    The first time I did not get through with the id of the vid so Ill try again...

    FPUZAMUIRVP6TNE..._gp 72.7 MB. Nothing I have will open it for now.


    To see how a real capacitor works, why not repeat the experiment
    with an actual capacitor?

    So, what will happen if you do? Firstly, when
    you put the battery to the capacitor it will charge up to the battery
    voltage. Now, if you are using a digital voltmeter it will have a high
    input impedance and when the battery is removed, the voltage will not
    change or decay. To make it decay, put a resister across the capacitor (the bigger
    the resistor, the slower he voltage will drop). It will continue to
    drop but something else will happen. The voltage will be an exponential
    curve. That means it will always take the same time to go from any
    voltage to half the voltage. Time it and see e.g. if it takes 45sec to
    go from 8v to 4v, it will take 45secs to go from 4v to 2v or 45 seconds from 6.5v to
    3.25v. The decay time is a function of the capacitor size and the
    resistor size. Look up why on the web by looking up "RC decay".

    Try it first using maybe a 100uF cap and a 1megohm resistor. Then make the cap bigger or smaller and see what happens (maybe double it) or make the R smaller or bigger and see what happens.


    Unfortunately your physics teacher doesn't know what he is talking about. I have explained fully in my previous references, I'd suggest you talk to either a local radio ham or trained electronics person who actually understands the difference between a battery/cell and a capacitor/condenser. Also, do a Google search for how capacitors work, there are lots of sites which will give you a good overview.

    Once again watch the video and find the readings in multimeter


    1 year ago

    why do you call it a capacitor, please share. Please can you share how and what you use to measure the capacity. I does not seem like a capacitor to me and certainly Leyden would not recognise it.

    1 reply

    I used a multimeter to measure it and my sir too concluded it as a capasitor.

    But my conclusion is that you have made a battery not a capicator. Any evidence that I am wrong?

    3 replies

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    1 year ago

    I agree with russ_hensel. It is certainly a battery