Greg,
The Nixie tube is not at all a resistive device. It's like a 150V Zener
diode. Therefore, your analysis doesn't make sense.
The Nixie tube has the ability to stand off about 70-100V before current
flows, and then the current is microamperes. You can do this test easily
with a potentiometer to supply a variable voltage (0-150V) to the tube,
and a ~10K series resistor tying all cathodes together to the negative
supply voltage. Measure the voltage across the 10K resistor as you turn
up the voltage. Ohm's Law will tell you how much current is flowing for
a given tube voltage.
On 10/23/15 11:00 AM, gregebert wrote:
If you consider the nixie to be a resistive device,
it's voltage-drop will be about zero. Therefore, almost the entire anode
voltage will appear across the driver.
--
David Forbes, Tucson AZ
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