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?
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.
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.
The 100% solar-powered airplane Solar Impulse 2 is prepping for its upcoming flight, becoming the first plane to fly around the world without using fuel. It's able to do so because of above-average performance by all of the technologies that go into it, especially materials.
With major product releases coming from big names like Sony, Microsoft, and Samsung, and big investments by companies like Facebook, 2015 could be the year that virtual reality (VR) and augmented reality (AR) finally pop. Here's take a look back at some of the technologies that got us here (for better and worse).
Good engineering designs are those that work in the real world; bad designs are those that don’t. If we agree to set our egos aside and let the real world be our guide, we can resolve nearly any disagreement.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.