Itโs the simplest semiconductor device made. Itโs technology ushered in the age of radio. Say hello to the electronic valve that rectifies and regulates โ the diode!
As per usual, making this installment of the series taught me quite a few things. Prior to reading up on the diode, I wasnโt aware how closely its development was tied to the birth of radio โ and just how finicky crystal detectors can be. I had a crystal demo in mind for this one, but it seems temperature and humidity hampered efforts to use my newly acquired galena samples. Oh well, more to come โฆ Fortunately there is a good example of a DIY razorblade diode in Breโs Foxhole Radio vid โ good stuff.
And just in case youโve missed any past installments of the MAKE Presents vids, here they are in a big olโ stack format โ
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