12AU7 plate resistance. It is difficult to measure the plate resistance when the tube is near cutoff, as evidenced by the squiggles in the curve for Vg1 = -20V. Fortunately, the plate resistance near cutoff is of no practical importance.
12AU7 plate resistance. It is difficult to measure the plate resistance when the tube is near cutoff, as evidenced by the squiggles in the curve for Vg1 = -20V. Fortunately, the plate resistance near cutoff is of no practical importance.