FuseKiller Posted October 24, 2006 Report Share Posted October 24, 2006 Ok, here is a challenging one for you. I have no part number- it Quote Link to comment Share on other sites More sharing options...
AN920 Posted October 24, 2006 Report Share Posted October 24, 2006 It is called a Shockley Diodehttp://www.allaboutcircuits.com/vol_3/chpt_7/3.html2 of these in anti-parallel used to make a diac Quote Link to comment Share on other sites More sharing options...
Ughadoo Posted October 24, 2006 Report Share Posted October 24, 2006 It can be a shockley, but its behavior when voltage drops to +10 V is a bit weird; Quote Link to comment Share on other sites More sharing options...
FuseKiller Posted October 24, 2006 Author Report Share Posted October 24, 2006 When the black band was connected to the resistor, it would not conduct. Well, until there was a lot of DC voltage applied, then it seemed to break down just a bit. It definitely has the characteristics of a Shockley Diode - that was a huge help. The work around was a zener diode and an SCR. The Zener connected to the gate and anode. Once the SCR gate got enough current, it was on and the Zener was shorted.One other question: where can I order one (or many) of these and/or do companies still sell them?Thanks again for the help. Quote Link to comment Share on other sites More sharing options...
hotwaterwizard Posted October 25, 2006 Report Share Posted October 25, 2006 (Q)--Is a Shockley the same as a Schottky diode?(A)--No. A schottky diode is a fast switching diode with a low forward voltage drop. A shockley diode on the other hand, also known as a four layer diode, is a thyristor that switches once its breakover voltage is reached. Quote Link to comment Share on other sites More sharing options...
mugsby Posted October 25, 2006 Report Share Posted October 25, 2006 it's a shunt voltage regulator Quote Link to comment Share on other sites More sharing options...
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