15-02-2017, 10:36 AM
(14-02-2017, 09:50 PM)Crackle Wrote: ... which is the bottom end of the track and the top end?
Mike, by your own reasoning, fully anticlockwise = minimum reaction = maximum grid bias. As I said, you can prove that because you will know exactly what was originally connected where.
Therefore, the anticlockwise pot connection should be connected to GB and the shorting plate to earth.
You already know that the anti-clockwise section of the pot has the maximum change in resistance per unit of rotation so the fixed resistor should be connected between the slider and the shorting plate to give the results I stated except that I made a mistake!
My calculations were still based on 270° rotation and the figures I stated were for the first 180° of rotation. I need to rejig the spreadsheet to compensate for this.
