Re: Distorted Sine Wave

On Sun, 02 Jun 2024 12:34:29 GMT, Jan Panteltje wrote:

On a sunny day (Sun, 2 Jun 2024 12:12:53 -0000 (UTC)) it happened
Cursitor Doom <cd999666@notformail.com> wrote in
<v3hnk5$3bda7$2@dont-email.me>:
 

Peak to peak volts into 50 ohms on a scope will be fine if don't have
access to an RF power meter.

 
No idea what you are up to,
but effective power can me measured this way:
signal into dummy load, measure temperature rise of dummy load.
Now try same with DC on dummy load, measure temperature rise set DC
voltage to same temperature rise.

My old HP RF power meter uses this principle. It has a thermistor sensor
head which is remarkably sensitive down into the microwatt range. Not only
that, but there isn't any noticeable thermal lag, even at very low power
levels, so the meter needle instantly flicks over to give the power
reading. I've often wondered how they do that. More modern meters use a
different principle IIRC.

Ohm's law gives you Watts,
 https://panteltje.nl/pub/250W_1_GHz_dummy_load_IMG_4563.JPG
Or build you own power meter

Building myown RF power meter to emulate what a commercial one can do is
way above my capabilities, sadly, Jan.