When we turn off our device, the electrons slowly return to their place
and stop. But if these electrons, like our 50-kilometer
car, were stopped in an instant, surely the electrons would drift away from
their path in a moment, like a derailment of a train. The device must never be
turned on again.
Then we must have a braking system so that the electrons do not have to
stop in a moment like our car. But what can be done? If the switch is turned
off, the power connection must be turned off immediately. We have no chance to
turn off the switch slowly in our hands. We need to find another way.
There is a way. If we make a system so that our device will have an
electroplating object. When we connect the power to our device, it will charge
while the device is on. Then when we switch it off, the device will run for a
while after receiving power from our charge holder. As the object will
gradually run out of charge, so will our device. This will prevent
instantaneous stoppage of electrons in our device. And we can do this using a
small size and a specific voltage battery as needed.
The problem has been solved but some more complications remain. Suppose
someone turns on a device and immediately turns it off again. What will happen
next?
Since we have only kept the device running for a short time, our charge
holder battery did not get a chance to be fully charged. So when our device is
off, you will no longer get the help of this battery. What can be done?
There is a way. If we build our container or battery in such a way, it
will be fully charged in a very short time. Only then can this problem be
solved. The charge that will be in a very short time will be able to give it
the desired voltage. We can do that. However, like the battery, the lifetime of
this charge will be less. But we have no problem with that.
Like a battery, it is not a battery. Completely different from the
battery. So we can give it another name. We do not call it a capacitor or a
capacitor.
Even though different types of capacitors are used for different
purposes nowadays, it would never have been possible to revolutionize our
electronics without them.
Written
Jeion Ahmed
Electrical and Electronic Engineering (EEE)
Chittagong University of Engineering and Technology (CUET)
2 Comments
Nice explanation. I want to know more in details about capacitor and inductor. No one could satisfy me until now. Please teach me
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