Hickok 83 Solid State Tube replacement with zener diodes.

I searched the internet for a long time trying to find a solution to the Solid state 83 tube replacement. The problem was if you installed an off the shelf solid state 83 tube you could no longer set the line voltage on the tube tester. The voltage was off the scale and the variable resistor could not compensate for the extra voltage. What was needed was a way to emulate the 15 volt drop found in the original 83 tube. To do this you need a Solid State 83 tube with 2 zener diodes installed to create the voltage drop.
I ordered enough parts to make a few extra so I am selling them on Ebay. 

  If you have any questions you may contact me at this email address.  I will try to respond.

83tube@compoutlet.com

Thanks.  Mark Church  07-2014

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