The ballast referenced is a T5 14W circuit built for the linear tube fluorescents in commercial and shop applications. They have end-of-life issues different from CFLs
Though related, I think this circuit is chasing problem of low population as I understand new fluorescent ballasts have requirements to be more EMI and otherwise future modulation distribution compatible. Hopefully, this problem is addressed by smarter self-protection circuits.
The takeaway should be that as engineers with low wattage circuits we need to understand that PWM and boost power supplies can create fire hazards that need to be anticipated early in design.
However, their own refutation text is cause for alarm:
CFLs (compact fluorescent lamps) don't burn out the way incandescent light bulbs do. Instead, as they near the ends of their lives, they grow dimmer. While some CFL bulbs merely stop emitting light when they finally quit working, others kick the bucket with a dramatic "pop"! sound and then vent a distinct odor. A few even release a bit of smoke at their termination. Sometimes the bases of the bulbs turn black. This seemingly cataclysmic reaction has to do with the breakdown of the bulb's ballast, which is contained in the part of the bulb that is screwed into the socket. As the bulb ages and degrades, so does its ballast. Yet as scary as odors, smoke, and even blackening of the base of the bulb might be, these lamps are fireproof and are meant to fail safely at the end of their lives.
An incandescent lightbulb does not turn black, does not emit smoke or an odor when it fails naturally.
How is this better than an incandescent bulb? Maybe the technology described in this article prevents the failure symptoms listed above. I hope so; it might improve the image of the bulbs.
The alleged cost savings aren't there. The light given isn't as bright. They fail in a messy and annoying manner. I forget why they're being forced on us.
TJ, I had not heard that. My experience with CFLs is that they do not last nearly as long as rated. I expect that the reason is that they are cycled far more often than they are designed for. We do that with incandescant bulbs and think nothing of it. Might this overvoltage protection approach help with that problem?
The 3D printing revolution seems to have a knack for quickly moving technology ahead by way of collaborative effort and even a little friendly competition -- all of course in the name of scientific advancement.
Advantech has launched a new series of motion-control I/O modules to meet the increased demands that come with more distributed industrial systems that require control of a growing number of axes and devices.
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is