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I came across a rather good article on using supercapacitors to buffer energy harvesters.
It was written by Pierre Mars of supercap maker CAP-XX, and published in the Journal of Energy Harvesting.
There is plenty about leakage, and even the problems of charging from 0V when the chemistry needs a little kick start, it appears.
It ends with an application circuit including a vibration harvester from Perpetuum.
- Although there is a potential flaw in the circuit, I don't think a MAX9107 could be used for the two comparators as the chip has a common power pin and the circuit requires them to be fed from two different rails.
A most interesting article.
'Alice'
Respond below, or to alice@electronicsweekly.
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Comments (1)
There was a magazine news item, entitled " Engineers Beware " , some years ago ...
It recounted , the story of two college students who created some circuitry for an April fools prank. It was used by an employee of a company, and it led to big problems for that company..
Does anyone know what that circuitry was?
I have suspicions about a "6dB coupler-detector circuitry", that I have come across, and I feel that it may be prank circuitry.
Thankyou , Gordon.
Posted by Gordon J Reason | July 27, 2010 6:49 PM
Posted on July 27, 2010 18:49