I need advice and help. I am newbie and kind of interested in building things. Please bear with me.
I want to power my wireless modem/router using a solar panel so when there is no electricity I can still watch videos and surf internet as there are frequent brownouts in my area.
Buying a lead battery is expensive and not nature friendly, secondly I want to explore things or building things. So I started reading about solar panels, capacitors, diodes and transistors, etc.
I bought soldering (irons,leads) and digital multi-tester. I bought a super-capacitor rated as 100F 2.7V
I read that when the capacitor is charged or exposed to more than the values it is design it will explode.
I tested the solar panel using multi-tester and it shows 7.2V.
If I connect my solar panel (7V) supply to my super-capacitor which is only 2.7V then my super-capacitor will explode, right? Is there a simple way (circuitry) you can suggest to avoid my capacitor from exploding?
The input is 7V and I read that capacitor explode when they are exposed to a higher voltage source.
I cannot buy resistors in my area so I am salvaging some resistors from older radios and TVs that are still working. I can order online but it will take weeks to come.
How to make sure that the input will never be above 2.7 volts since super-capacitor is rated only 2.7V 100F.
Sorry I like to correct the capacitor value: 2.7V 10F
I would like to add more about my situation.
My location is always sunny and in-case there is a power cut and it's daytime I want to power my router/modem using the solar panel that we have.
The solar panel supply is not fixed depends on the sunlight. It sometimes produces 5V up to 9V.
I read that capacitors function like a temporary battery. The goal is to provide a steady flow of 9V for the router.
In case the solar power source drops then the super-capacitor will still have the power to supply the 9V.
Please note I have 6 super-capacitors (2.7V, 10F.) I bought them online. See the image below.
Bear with me. Thank you.