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Argus25 · 21st Aug 2019, 8:58 am

David, interesting story about the pulser.

Also of note a tunnel diode can be deployed in reverse as a detector for low level RF and in this application they act as a zero forward voltage drop detector. I have tried this in my workshop when I was trying to make zero forward voltage drop detectors. In this application they are referred to as a "Back Diode". This, along with the current source driven detector, as a method of voltage drop free detection, are covered well in Horowitz & Hill.
Voltage drop free RF detection has applications in making a good RF probe.

21st Aug 2019, 8:58 am	#15
Argus25 No Longer a Member Join Date: Oct 2016 Location: Maroochydore, Queensland, Australia. Posts: 2,679	Re: Heathkit GDO using a Tunnel Diode David, interesting story about the pulser. Also of note a tunnel diode can be deployed in reverse as a detector for low level RF and in this application they act as a zero forward voltage drop detector. I have tried this in my workshop when I was trying to make zero forward voltage drop detectors. In this application they are referred to as a "Back Diode". This, along with the current source driven detector, as a method of voltage drop free detection, are covered well in Horowitz & Hill. Voltage drop free RF detection has applications in making a good RF probe.