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Old 20th November 2007, 22:50   #5 (permalink)
dougl65
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This makes interesting reading and explains the use of transistors and protection diodes. I would love to make this and I think it is not too complex given that you can download the pdfs from the maplin site for the transistors that show exactly the correct terminals for the emitter and collector connections!

Relays

http://www.maplin.co.uk/Media/product_pdfs/qq14.pdf

Last edited by dougl65; 20th November 2007 at 22:52.
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