Hello,
here is my (naive) approach to a poor man's kvd:-
instead of making 6 decades let us make 3 "centades".
first centade is YR-NEOHM 10K 15ppm/degC, 0.1% resistors (unselected), 101 in series, (positions marked 00 thru 99)
second centade is YR-NEOHM 1K 15ppm/degC 0.1% resistors (unselected), 101 in series, (positions marked 00 thru 99)
third centade is YR-NEOHM 100R 15ppm/degC 0.1% resistors (unselected), 101 in series, (positions marked 00 thru 99)
second centade is paded down to 20K (from 101K) and the third centade is padded down to 2K (from 10.1K)
the kvd input impedance is 1.01M (can be padded down to 1M).
the division ratio will be selected by selecting 2-digits at a time. (using jumpers like Conrad Hoffman's design)
what would be the performance of this contraption?
regards and comments required from the learned members of this forum.