I'm trying to find some info on the 1S34 diode. I believe its germanium. I have a couple but I don't have a means to test the forward voltage. Anyone know?
Thx!
1S34 (https://www.radiomuseum.org/tubes/tube_1s34.html)
1S75 (https://www.radiomuseum.org/tubes/tube_1s75.html)
AA117 (https://www.radiomuseum.org/tubes/tube_aa117.html)
(https://i.postimg.cc/yW8khRGx/20237102.png) (https://postimg.cc/yW8khRGx)I don't know if I own Toshiba's products. And it's just one sample.
Post with some germanium measurements with tabulated data:
https://www.diystompboxes.com/smfforum/index.php?topic=117550.msg1126227#msg1126227
Some plots from early datasheets:
https://www.diystompboxes.com/smfforum/index.php?topic=117550.msg1126232#msg1126232
(https://i.postimg.cc/5jxTjgXX/Simple-Diode-VI-Test-V10.png) (https://postimg.cc/5jxTjgXX)
Quote from: Rob Strand on December 14, 2023, 12:01:51 AM(https://i.postimg.cc/5jxTjgXX/Simple-Diode-VI-Test-V10.png) (https://postimg.cc/5jxTjgXX)
::) Interesting enough.. :icon_wink:
Considering all diodes obey to Schokley equation, what counts in current ten-fold proportionality is
IS (reverse bias saturation current) order of magnitude..
(it should be good to know for what forward bias current Ge & Si voltage drops are equal..)
Quote from: antonis on December 14, 2023, 06:52:48 AMConsidering all diodes obey to Schokley equation, what counts in current ten-fold proportionality is IS (reverse bias saturation current) order of magnitude.
The Is term in the Schottky diode equation isn't constant.
This classic paper fills in a lot of the missing details. Mainly equations (1) to (5).
https://xdevs.com/doc/_Metrology/tsividis1980.pdf
Spice knows about the T^3 term in equation (3).
If you try to derive the VBE or VD temperature coefficient for a transistor or diode you need all those details to get the well known -2mV/deg C.