On 22/07/2019 14:45, Dave Plowman (News) wrote:
In article ,
Farmer Giles wrote:
I have used them, but not for a while. From memory, the self-discharge
rate is quite high. The main benefit of supercaps is the fast rate of
charge and the high number of charge/discharge cycles.

Thought their main purpose was a very high maximum discharge current for
their size?

There are essentially two types, some for effectively replacing small
batteries for memory etc, and some for supplying and absorbing rapid
short bursts of welly. The former tend to look like ordinary
capacitors, the latter have much thicker tabs to take the current.

Cheers
--
Clive