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Series Diode Input Impedance???

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Space Varmint

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Off hand does anyone know the approximate input impedance of a series input 1N914 with a 10K ohm resistor connected to the back end going to ground? I want to use a step transformer to feed it.
 
Off hand does anyone know the approximate input impedance of a series input 1N914 with a 10K ohm resistor connected to the back end going to ground? I want to use a step transformer to feed it.

hi,
Look at this graph, you should be able to figure out the resistance at different forward currents.
 

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Yes, use Ohm's law.

Also note that it's dependant on the temperature, current and that it varies between diodes with the same part number: look at the difference between the typical and maximum vales, the minimum values aren't specified and the difference is probably going to be as great.
 
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