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A fundamental electronic component that stores energy in an electric field, commonly used in filtering applications.

5 votes
Accepted

Can I replace a 0.1µF capacitor with 1µF in this circuit?

Seeing how it is across the 9V supply rail it is just decoupling for the power supply rail. Better designs (as most people here would be quick to point out) would have a decoupling cap local to each V …
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1 vote

Soldering capacitor pins

Nope, no power should be applied to a board you are soldering to so pin order does not matter. If they are polarized capacitors just make sure you don't solder the leads in backwards.
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0 votes

Circuit diagram for uninterrupted usage of a 12V 1A device using 12V 7Ah battery with auto c...

I would suggest using an off the shelf module. Googling "12V battery charger for [your type of battery]" would be a good start. I can't link you because I do not know what type of battery, I can assum …
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2 votes
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Minimum voltage rating for output capacitor for use with LTC3525-5 boost voltage regulator

I simulated your circuit using LTSpice for 3V in and 4.2V in and there was virtually zero overshoot. That means you could use 6.3V capacitors. If your local supplier doesn't have any you can always or …
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