Ah, thanks for clearing that up, but what is linear distortion?
The artifacts from nonlinear path elements and ones with hysteresis are quite different. Sort of the difference between being dragged behind a speeding car or being in front of one when it hits the concrete wall.
Have an annealing furnace too?
Coolness!
I need some leather bits punched. Interested?
se
Annealing furnace? Doesn't everyone? Time and temperature controlled tempering furnace capable of decent sword lengths is on the list of toys I don't have... yet.
Is the leather still attached to anyone? Never tried it, bet it would bind and gum up things, do you have any idea at what a service call costs!
Then what do you plan to do with those laminations after you punch them out?
So what can your machine do? Just punch metal and cardboard?
se
John,
It should not be too difficult, also with normal test gear, to check when core saturation sets in.
You don't need to simulate the tiny voltages of the cartridge.
Amplitude and frequency behave linear when saturation must be checked.
To be more clear, when I know that my line level input transformer can withstand 6 VRMS at 20 Hz before core saturation occurs, this means that the core can have 12 VRMS at 40 Hz, or 3 VRMS at 10 Hz.
What I still would like to know: was your measurement somehow comparable with the real situation (cartridge-transformer)? Therefore we need to know your voltage level at 10 Hz. If your gear does not allow, then put in more voltage at some higher frequency. Once more: core saturation is clearly visible on the scope.
Coolness!
I'll look elsewhere for someone with more modern, more sophisticated equipment who can manage to die cut leather.
se
You know.
What you said.
Sheesh, you don't even know what you said?
se
OK,
As quick as I popped in here so quick will I pop out.
When you guys, reputations or not, don't take the effort to give proper replies I don't put more time in this; enough other things to do
It is 1 AM here, good night.
Yawei Nisshinbo turret punch ?
You've got to be kidding, even as low as 60punches/min is no problem with leather.
Which is what i did during childhood days, punching leather straps for fire extinguisher holders inside Belgian army vehicles, contract my old man had.
For the record, everybody put some money toward me answering Pieter's question:
Yes, I had to do the test over. Took me about 1 hour.
Pieter could have done it, himself, but here goes:
1933, mumetal transformer 0.1V out, 10 ohm drive, 50K load, 10Hz distortion is 0.072%.
1931, Amorphous transformer 0.1V out, 10 ohm drive, 50K load, 10H distortion is 1.2%.
This is a distortion increase of about 20 times between the two units.
13.5 mV drive voltage.
Your distortion may vary.
Yes, I had to do the test over. Took me about 1 hour.
Pieter could have done it, himself, but here goes:
1933, mumetal transformer 0.1V out, 10 ohm drive, 50K load, 10Hz distortion is 0.072%.
1931, Amorphous transformer 0.1V out, 10 ohm drive, 50K load, 10H distortion is 1.2%.
This is a distortion increase of about 20 times between the two units.
13.5 mV drive voltage.
Your distortion may vary.
Of course, I used an input signal as low as practically possible and the distortion TRACKED with level AND frequency....
Well then there you have it. The laminated hi nickel core clearly whomps the amorphous cobalt core in the low frequency distortion department.
So what are you going to do now, John?
se
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