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Checking Tunnel Diode Setup

Bill
 

On page 14 in these Tektronix Service Notes.
http://w140.com/tekwiki/images/b/bb/Service_Scope_49_Apr_1968.pdf
Bill

aldue
 

I noticed that an open TD caused the peak Voltage on the anode to double.
Frustrated, I finally used a potentiometer to slowly raise the Voltage from
zip to about 4.2 Volts. I used a 68 Ohm series resistor and a
milliammeter. The diode current would rise until Vp was reached, then
dive. The diode switches right through the negative resistance region.
Any attempt to increase Voltage again increases diode current.

On Wed, Apr 8, 2020, 7:32 PM Bill via groups.io <ko4nrbs=yahoo.com@groups.io>
wrote:

On page 14 in these Tektronix Service Notes.
http://w140.com/tekwiki/images/b/bb/Service_Scope_49_Apr_1968.pdf
Bill