Electro-ramblings

An Engineer in Wonderland has a new home. You can find this particular entry here. If you wish to leave a comment, please do that on the new blog.

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.

No email addresses are collected for marketing purposes from responses to this blog. I will keep it that way for as long as possible.

Embedded Live 2010 is now taking delegate registrations for the UK exhibition which takes place at Earls Court, London 19-21 October 2010.

Confirmed exhibitors include: NXP Semiconductor, RS, ARM, Tektronix, Nokia - Qt Software, XJTAG, Pebble Bay Consulting and Pico Technology.

To register please visit the Embedded Live website registrations page.

An Engineer in Wonderland has a new home. You can find this particular entry here. If you wish to leave a comment, please do that on the new blog.

Apart from the first one which is a bit pretentions, I was at least entertained by this lot of techno body art.

'Alice'

Respond below if you so wish.

No email addresses are collected for marketing purposes from responses to this blog. I will keep it that way for as long as possible.

http://blogs.discovermagazine.com/loom/tag/physics-tattoos/

An Engineer in Wonderland has a new home. You can find this particular entry here. If you wish to leave a comment, please do that on the new blog.

From Pierre Mars of CAP-XX

Just responding to your comment in the blog An Engineer in Wonderland - Energy harvesting and supercapacitors.

You are quite right, the final circuit would need 2 x MAX9015, you can't use both op amps in the dual version MAX9107.

Since then I have done some more work... 

An Engineer in Wonderland has a new home. You can find this particular entry here. If you wish to leave a comment, please do that on the new blog.

Ten out of ten to Leeds-based Energy Saving International for its gadget that cuts the power consumption of mobile phone chargers to 20mW once the phone is charged.