On 13 Aug 2014 04:31:20 GMT, EngineeringGuy
wrote:
[snip]
In article ,
Jim Thompson
wrote:
[snip]
This is one of those annoying cases where the OP has vanished after
the initial post and is not answering questions. Without more info,
it's a wasted effort.
Something along the lines of Field's relay method post... maybe with
MOSFET's... is most likely to succeed... just needs the right
controls
:-}
...Jim Thompson
Jim... I haven't vanished, just out of town. I don't quite understand
what clairification you require... 10 caps in series to give 27VDC total
operating voltage.. each with "something" in parallel to prevent over
voltage... overvoltage will cause "super capacitors" to short and fail..
that "something" must be such that it will not discharge the capacitors
when the 25 volts is removed, turned off, disconnected, not charging,
etc.
Bill
HOW the "25 volts is removed, turned off, disconnected, not charging"
matters.
It seems to me that "over voltage" would be managed across the whole
stack, with equalizing resistors across each cell.
Perhaps making the charging voltage sufficiently large that the OVP is
always active during charging.
When the charging voltage is removed, "something" in the OVP, because
it is inactive, disconnects the equalizing resistors/elements??
What "leakage" current can you tolerate?
...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: skypeanalog | |
| Voice
480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at
http://www.analog-innovations.com | 1962 |
I love to cook with wine. Sometimes I even put it in the food.