No, Steve. The whole point of a transformer is that it passes a signal without attenuation. The voltage amplitude may be reduced but the current amplitude will be increased.
Attenuation in physics is the diminution of flux. Flux is conserved in a transformer.
Attenuation is a reduction in power.
Attenuation in physics is the diminution of flux. Flux is conserved in a transformer.
Attenuation is a reduction in power.
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I also like designs based on transformers and like others, one of the main issues is cost - good iron isn't cheap. But if you are a busy man, the time saved in building a simple amp with transformers can be an incentive. I recently bought a nice output transformer from SOWTER and I hope I'll get a chance to play with it this summer.
I too like designs which are based on transformers, but I also like those which are not based on transformers.
Which I think takes us full circle from post #33.
Attenuation can be a reduction in any number of things. Voltage, current, power, whatever.
Point being, if you expect to get a given voltage at the transformer's output, it needs to have a certain voltage at its input. And with a step-down transformer, the voltage at its output will always be lower than the voltage at its input.
se
This is rubbish. The power produced by an output valve is all transferred to the speaker by the OPT. A transformer has neither gain nor loss.
Attenuation refers specifically to power even when the quantities involved in the calculation are fields.
Why do you think its 20*log10(Vi/Vo) for fields (amplitudes) and 10*log10(Pi/Po) for powers (intensities)?
It's because power varies as the square of the voltage.
The formula 20*log10(Vi/Vo) is only valid in a constant impedance environment, which of course a transformer is not.
A transformer only attenuates the power it passes to the extent that it is inefficient.
Decibel - Wikipedia, the free encyclopedia
It's not that I don't hear what you're saying Steve, but what you're saying is confusing and muddled. You need to learn to distinguish between voltage gain and power gain and to be careful how you employ terms when discussing topics where a critical appreciation is required.
Here's what he said.
It's not attenuating the signal.
If we don't preserve these distinctions and nuances in the technical language we employ then meaningful discussion will ultimately become impossible.
I find it incomprehensible that you should take up the cudgels in these circumstances. If I miswrote allotrope for isotope you would hardly let it pass. I can only imagine that you bear me some personal animosity.
It's not attenuating the signal.
If we don't preserve these distinctions and nuances in the technical language we employ then meaningful discussion will ultimately become impossible.
I find it incomprehensible that you should take up the cudgels in these circumstances. If I miswrote allotrope for isotope you would hardly let it pass. I can only imagine that you bear me some personal animosity.
In my hand I have a 10 by 2 inch, clear plastic "TIMESAVER" LETTERING GUIDE No. 260-V with the same font. I used it to draw schematics, back in the old days (1970's - 1980's)
Sweet!
Yeah, I used the same or similar back in the day, along with my Rapidograph pends.
Fun stuff!
se
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