Don't dismay...there's a way.
A 52-ohm dummy load with a rectifier and filter cap yields an accurate dc
voltage in proportion to the power being dissipated. Today's vom's and dvm's
are pretty accurate (average the readings of all your meters). The rectifier
can be a 6AL5 with its plates connected in parallel, and its heater
connected to its cathode, so the output voltage rating is high enough for a
kw. The plates are connected to the hot side of the dummy, and a 0.01 disc
in parallel with say a 1-uF connect to the cathode for a positive dc voltage
out with a hold time for peak readings. It's inherently self accurate and
requires no calibration.
73, Roy K6XK
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