Developments in Battery Technology

There have been some exciting developments in battery technology over the past several years.  I am currently working on a project that uses one of the latest battery chemistries (Lithium Ferro-Phosphate).  These batteries have one of the highest power densities, can be fast charged without degradation, and have a safe pulse discharge rate greater than 100C.  This means that the “EXCITING” can be just that in the development environment if not handled safely!

The system I am working on is designed to replace a Lead/Acid system used in Hospital environments.  It represents a Quantum Leap in functionality in this application, and eliminates hazardous materials found in the Lead/Acid unit it replaces.  It has excellent hardware safety designed in by Cliff Gerhard.  My contribution is the firmware for several elements of the system, the Battery Safety/Controller, The Charge Controller, and the Main Controller which contains several adjustable high current DC outputs and communicates via USB to a host computer for monitoring and administration.  I have also designed the monitoring and administration applications for the Host using C# 2008 and the .NET Framework v2.0 (.NET Framework v2.0 was chosen for down level compatibility to Windows 2000).

Altogether a fun project…

Single (mis)use plastic bags

While I have enjoyed the great privilege of growing up in Southern California, I am also deeply aggrieved by the deterioration of our beautiful environment that I have witnessed due to the steady increase of plastic debris among other things.  In some communities, bans or restrictions on “Single Use” plastic bags have been enacted or are being considered to mitigate the numerous problems that they pose.

However, I want to speak now of the hidden direct costs to the taxpayers. Something a bit more tangible.

I won’t say anything in this post about the adverse environmental impact caused by this waste once it is lose in the environment.  I’m just talking about the money for now.

While some People think of plastic bags as being free, they have actually cost the taxpayers of California billions (that’s right billions with a B) in waste management and environmental mitigation costs.

Here are some eye-opening statistics on single use plastic bags provided by Californians Against Waste.

In San Francisco for example, City officials estimate that they spend $8.5 million annually to deal with plastic bag litter.  This equates to a 17 cents per bag cost to the taxpayers.

Altogether, California taxpayers spend $25 million annually to landfill discarded plastic bags, just the ones that remain in the controlled waste stream.

Here’s the big number though:
Southern California cities have spent in excess of $1.7 billion in meeting Total Maximum Daily Loads for trash removal in impaired waterways.  Plastic bags are a significant contributor to this impairment.

What about boosting recycling efforts? Well it’s proven to be very costly for Single use plastic bags: Nobody is doing it because they can’t figure out how to in a cost effective manner.

In summary:
The manufacturers and distributors of this toxic “instant waste” expect the taxpayers of California to continue subsidizing their status quo.  We can no longer afford that, we actually never could afford it,
the only reason we are paying it in the first place is ignorance, it would be insane to agree to a continuance of this robbery.

Here it is!

Here is my first post on the new blog. The links at the right (especially “Blogroll”) are unchanged from the original WordPress template.  This (among other details) is typically customized in the blogs that are typically visited by the public at large.  So, check it out and let me know what you think!