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Lithium Ion Battery Failures

I’ve had two encounters now with lithium ion batteries that have failed, became thermal runaways, and ended up venting, exploding and catching fire in the process. Believe me, they can release a crap load of noxious gases and smoke in a short amount of time and start a fire rather easily. It’s not an exceptionally […]

Portable Battery Charger/Loading System

I’d started building this a couple years ago and hadn’t finished the project until recently. It’s basically a high amperage battery charger with a small foot print, lot’s easier to move around than your run of the mill big box chargers. The primary side of the transformer is tapped for 5 charging rates from around […]

PCB Wall Art: Finished!

I had no clue this project would go this far when I started, but no surprise really, it happens to me all the time. Actually I enjoyed the destructive tear downs, although the scrapping/recycling part was a bit of a chore. Oh well, it is what it is and a done deal for now.

A […]

PCB Wall Mosaic Finished

Ok, it really is done this time. I added more PC MOBO’s and the boards from a huge pile of vending machine coin mech’s and bill validator’s to the little wall, then added some accent lighting for good measure. Any additional junk electronics will be used to trim things out or put on a shelf […]

Freed Eisemann FE-15

The Freed Eisemann FE-15 was a battery powered TRF (Neutrodyne) AM broadcast band set manufactured in 1925. I’ve done the preliminary work on the chassis and stripped/refinished the case so far. Some of the wire wound resistors will need replaced and the tube sockets have splits in the side shells which will also need fixed. […]

Atwater Kent 10C Model 4700

A few years back I had the opportunity to help with an estate liquidation/cleanup that was rather interesting. The deceased was a retired electrical engineer (Caterpillar), and having lived through the Great Depression saved every scrap of electrical/electronic gear he could get his hands on. After he passed away a big majority of the stuff […]

Atwater Kent Model 85 Restoration

I acquired this radio a few years back and have since started the restoration process. This is their second console superheterodyne radio. Due to RCA trying to corner the market on superhets all the other companies up until 1930 such as AK, to that date had made only TRF’S or tuned radio frequency sets. It […]

The Arc Flash Incident

This was a very close call and if my timing would have been off by for more than 3 sec I wouldn’t be posting about ittoday. The power generation plant I took care of had two out of the three of these switchgear units built by ABB. They were never put into production due to […]

PCB Wall Mosaic

I’ll start re-creating some of my previous post with this one. I had a ton of old computers and other electronics stored that I’ve acquired over the years and decided to scrap most of it. It was all disassembled and I recycled the metal, plastic and CRT’s. I already had plans for all of the […]