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Electronics => Beginners => Topic started by: nickeevblog10 on August 04, 2019, 10:42:02 pm

Title: charger to charge a 2.7volt capacitor at around 3Amoa
Post by: nickeevblog10 on August 04, 2019, 10:42:02 pm

I want to make one of these. I found some old kits no longer available but wondering can this be done, I do not have much money and I can solder and identify electronic components. To charge a 2.7V 500uF capacitor (I have the capacitor specification sheet).

Title: Re: charger to charge a 2.7volt capacitor at around 3Amoa
Post by: ledtester on August 05, 2019, 02:48:54 am

A bench power supply is the most straight-forward way to do it:

https://www.youtube.com/watch?v=Rtg2zJYuViw (https://www.youtube.com/watch?v=Rtg2zJYuViw)

A cheap LM2596 buck converter module should be good for 2A. You might be able to get 3A by using a better heat sink and active cooling. Here's a video which tests it under various conditions:

https://youtu.be/bK-yif8qqsc (https://youtu.be/bK-yif8qqsc)

You might get some additional ideas from this Julian Ilett video:

https://youtu.be/MdqJcrDiKN4 (https://youtu.be/MdqJcrDiKN4)