0.49" tall x 0.32" diameter
Right now there is a supplier selling these for $1.25 each.
Are these adequate for any train projects or is the voltage too low.
Thanks,
John
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Battery replacements for PS2 electronics
You just parallel and series them as required to reach your desired system DC voltage and overall storage capacity.
$1.25 seems reasonable for street pricing, although I wonder in how low other have found buying bulk and slow boat if one can do better.
1F is standard and again is and can be useful. 2.5V actually was the original voltage of many supercaps for a long time and then was raised to 2.7V as manufacturers could improve the process. You can get matching Zener diodes to balance and limit voltage and they match those ratings (2.4V and 2.5V are common ratings).
Put another way, not a bad deal and certainly can be used. As an example, the $4-6 MP3 boards I use to add sound like nice smooth bulk capacitance like this used as a pair in series to reach the 5V. Ideally you don't want to be so close to max spec, but in this case, I feed the board with about 4.5V from a regulator anyway so 2 in series works fine and ensures no sound dropouts or resets.
@Craftech posted:0.49" tall x 0.32" diameter
Right now there is a supplier selling these for $1.25 each.
Are these adequate for any train projects or is the voltage too low.
You can get 1.5F 5.5V ones for the same prices at Aliexpress.com.
@gunrunnerjohn posted:You can get 1.5F 5.5V ones for the same prices at Aliexpress.com.
Actually I wasn't necessarily asking solely for the purpose of making BCR 2 modules. I was wondering if there were any other uses for it. I forgot the link (fixed)
John
@Craftech posted:Actually I wasn't necessarily asking solely for the purpose of making BCR 2 modules. I was wondering if there were any other uses for it. I forgot the link (fixed)
Well, if you really want some supercaps like that...
59 cents for a lot of two.
Twenty of them would cost a total of $13.03 including shipping and tax.
$5.90 for the caps, $6.39 for the shipping, and $0.74 for the tax.
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@gunrunnerjohn posted:Well, if you really want some supercaps like that.......................
Do I ?
Still Not sure.
Like I said,
"Actually I wasn't necessarily asking solely for the purpose of making BCR 2 modules. I was wondering if there were any other uses for it.
Can you think of any? I know they are cheaper at AliExpress, but what can I use them for?
Thanks,
John
@Craftech posted:"Actually I wasn't necessarily asking solely for the purpose of making BCR 2 modules. I was wondering if there were any other uses for it.
Hard to say John, I don't personally have a use for them, I use the 5+ volt ones in any of my projects. I was really just pointing out there were cheaper sources.
