Mystery transformer
"GRe"
"Phil Allison"
You need a THD meter to make sense of what matters and what does not.
Input f/V/THD Output THD (600ohm terminated)
1kHz/1.0V/0.075% 0.082%
1kHz/3.6V/0.086% 0.101%
3.6V is the max. output for the audio generator.
** You need to use a much lower frequency.
Transformer non linearity is concentrated at the low end of the audio
band.
I used the function generator HV-output(600ohm) for this test.
Input f/V/THD Output THD (600ohm terminated)
200Hz/10V/0.036% 0.049%
100Hz/10V/0.037% 0.077%
50Hz/10V/0.037% 0.170%
25Hz/10V/0.036% 0.442%
** No "function generator" I ever heard of has THD figures as low 0.036%.
Post a link for the one you have.
PLUS it is crucial the source impedance be low - like 50 or 100 ohms.
In this case it does'nt seem to make a difference using the function
generator 50ohm or 600ohm output,
** Something is very fishy with your testing and that generator.
Easy way is to use one channel of a good hi-fi amplifier to buffer the
output of the generator and drop the impedance to near zero.
Only handy in the living room, not on the bench.
** Stop being such a PITA ****.
I posted HOW to do it - whether YOU have such an amp handy or not is
YOUR problem.
What a tedious **** head.
.... Phil
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