Capacitor headache


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Old 03-06-15, 08:48 PM
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Capacitor headache

Hello! This is my first time posting!
I am looking to add a capacitor to a simple circuit. My circuit consists of many parallel branches out of 4 AA batteries for a 6.5V total (batteries fresh). one branch has a bulb with no specs, but it runs bright on 6v.
i looked in too much to find the value of the capacitor i need without any luck.
so what do i need? The bulb to fade away in 2 seconds after turning current off...
i believe i also need a diode, which shall i use?!
 
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Old 03-06-15, 09:06 PM
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Welcome to the forums.

Do you have a supply of parts..... like parts removed from old electronics ?
You can experiment to see what size capacitor to use. I would try a 4700mfd at either 6.3vdc or 10vdc

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Old 03-06-15, 09:14 PM
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I will buy the capacitors they have alot of sizes, but here in UAE there arent any near shops, so itll be a long drive and i dont want to do it again
 
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Old 03-06-15, 09:20 PM
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Don't you have any old electronic things you can take parts from ?
Things like old radios, electronic games, etc.
 
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Old 03-06-15, 09:56 PM
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Unfortunately i lost every thing when my a visitor satying in with me in my room decided to throw away the "trash bag". It had all the circuits i disassembled over 10 years, and thousands of leds and resistors. But i am just for the first time needing a capacitor. I also dont want to get something below 10v so it doesnt blow its smoke everywhere. all i need to know is how many micro farads will keep my bulb fading slowly for 2 secs...
btw, i have a cheap multimeter, but i have no idea how to use it
 
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Old 03-06-15, 10:15 PM
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I need to go withen half an hour, what type of diode do i buy, and what capacitor? Quuck
 
 

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