"JGBOYLES" wrote in message
...
1500W into 50 Ohms yields 274V which you then divide by 27.4 to obtain
10V.
As you already have 10V by divider action, what do you need to
multiply?


It all works for me in Excel. Squaring the voltage eliminates the need for
any log stuff.

E = Root (P*R)

Scaled V is V / 273 but you'll have to go further to stay in the dynamic
range of the multiplier. V^2 should be around 10V or whatever the mult can
output.

W V scaled V V^2 V^2/10 Output ratio
1500 273.9 10 100 10 1
500 158.1 5.77 33.33 3.33 0.33
100 70.71 2.58 6.67 0.67 0.07



--
Steve N, K,9;d, c. i My email has no u's.