Posts Tagged ‘luxmeter’:

2012-04-28 LED Light Compared With Luxmeter

on April 28th, 2012 by - Comments Off on 2012-04-28 LED Light Compared With Luxmeter

Two years ago I decided that I wanted to get a light meter.  I had two old light meters for setting a camera, one was a Weston and the other a G.E.  Both were not sensitive enought to give an accurate reading of a LED.  I had some other choices, one was to use a

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2011-12-04 Joule Thief Conventional & Supercharged

Clarification: People have asked if the three windings explained in the schematic are in series or parallel. The three are in parallel, in other words, solder three of them together on each end. But make sure you use an ohmmeter to find and separate the other (4th or feedback) winding from the three. In Jan,

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