Homepage: http://www.thephysicsteacher.ie/ Blog: http://ozymandias1.wordpress.com/ A brief demonstration on how to use semiconductor diodes as polarity indicators (i.e. to tell which terminal of a circuit is positive and which is negative. By the way, I forgot to thank my predecessor the legendary Dave (the rave) Clarke for putting all these circuits together. So here it comes: thanks Dave :)
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