Good idea to pull the batteries. Didn't work, though. Not sure what the right way would be to discharge the alleged capacitor. I might try to remove the batteries and then short the DC + and - together. Otherwise, I'll have to take a look inside.
"I've noticed at our local Walmart that as I push some of the carts, I get a static discharge through my hands. It's really uncomfortable. Have other's noticed this same problem?"
Often you will see some versions of shopping carts with a discharge strap or small chain hanging down rubbing the ground. This also seems to be a greater problem with the newer plastic carts than the older metal carts... There has been alot of info about this problem with a specific retailer which you can find by searching: Wal-martshopping cart static electricity shock.
I once worked for a contract ICT test house developing test programs and fixtures. Our test head (HP3065) and debug bench was in a "static controled" room with a disapative carpet. One day durring the winter, I walked accros that rug, reached down into the empty patch bay of the test head and drew a 1" arc to one of the test card connections; it hurt like heck and I jumped back. I immediatley grabed the diagnostics fixture, and found that we had a dead analog card. It took two day of down time for HP to find the problem and get us a replacement card. So much for the anti static carpet. We got a lot more serious about wrist staps after we learned that we could not rely on the carpet any more.
Truchard will be presented the award at the 2014 Golden Mousetrap Awards ceremony during the co-located events Pacific Design & Manufacturing, MD&M West, WestPack, PLASTEC West, Electronics West, ATX West, and AeroCon.
In a bid to boost the viability of lithium-based electric car batteries, a team at Lawrence Berkeley National Laboratory has developed a chemistry that could possibly double an EV’s driving range while cutting its battery cost in half.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.