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Archive for the 'Cool Stuff' Category

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Dissection of a Furnace Fan Motor

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or Why There is so Much BS on the Net. In this post I’m going to take you through a guided tour of the common everyday fan motor that drives the fan in just about every domestic air conditioner, furnace or heat pump. At the same time I’m going to demonstrate why there is so […]

Posted by neonjohn on October 1st, 2008 under Cool Stuff, Energy, HVAC, Misc, Philosophy | 8 Comments »

Kudos to Black and Decker

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I love it when a big company does the right thing. Awhile back I had read with great interest that Black and Decker had released a new line of consumer/hobbyist grade cordless tools powered by the great new Lithium Iron Phosphate batteries from A123. This is the lithium battery that is supposed to be safe […]

Posted by neonjohn on August 14th, 2008 under Cool Stuff, Product Reviews | 2 Comments »

Laser Printers and Inverters

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A question came up about whether a laser printer would work with an inverter. I first started running an HP LaserJet II on a pure square wave inverter about 20 years ago. Not a pseudo-sine inverter but a brute-force square wave, produced by a “baseband” (60hz) Tripp-lite inverter. This thing was a simple transformer-based blocking […]

Posted by neonjohn on August 4th, 2008 under Cool Stuff, Energy | 5 Comments »

Eye Fluorescence

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Recently on the neon mailing list the topic of eye fluorescence came up. That is, the glow one can see in the eye that’s being illuminated with UVA, AKA Black Light. There was some question as to whether the effect even happened or not. Having had a typical Boomer teenager’s bedroom, that is, one flooded […]

Posted by neonjohn on July 14th, 2008 under Cool Stuff, Science | 2 Comments »
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