04-03-2017, 07:01 PM
Hi,
Mike and I have been discussing this via email - he'd like me to remove some of his earlier posts. The question was basically "what value resistor would do the same job as the transistor", and the answer to that is indeed 1.3M. In other words, a potential divider of 5.6M and 1.3M would indeed give 1.9V at its junction when fed from 10M.
We all thought that he was asking about the AC input impedance - our "bad" for not thinking harder about the numbers he posted. But the discussion that ensued was interesting and worthwhile, so we'll leave all that here.
After the tidy-up, please keep the discussion going
Mark
Mike and I have been discussing this via email - he'd like me to remove some of his earlier posts. The question was basically "what value resistor would do the same job as the transistor", and the answer to that is indeed 1.3M. In other words, a potential divider of 5.6M and 1.3M would indeed give 1.9V at its junction when fed from 10M.
We all thought that he was asking about the AC input impedance - our "bad" for not thinking harder about the numbers he posted. But the discussion that ensued was interesting and worthwhile, so we'll leave all that here.
After the tidy-up, please keep the discussion going
Mark
