@glpg80 are you an EE?
In layman's terms: A transformer has a primary side and a secondary side.
You put a voltage into the primary and then get a different voltage out of the secondary.
Depending on the design you can either get less voltage out (step down) or
more voltage (step up). The secondary can also be tapped to supply multiple
different voltages out at the same time.
Now, about that steel......
Yes I have a masters in EE. It’s not easy to explain their functionality at maxwells equations and physics laws, but it eliminates absolutely any chance of opinion based descriptions as to how they work and what they do. I took the time to write that on a similar topic over on TGP back in November of last year. It comes up often.
No problem and yes I agree there is no way to remember everything from our formal education - I keep a lot of reference material around.Thanks for this info.
It's been about 10 years, but when I studied EE at the undergrad level, once you got through linear circuits, the whole curriculum seemed to turn very DSP and circuit logic based. Definitely not the place to learn about tubes... much more computer/computing hardware based. As soon as that became clear, I switched majors haha.
Wrong. It's fairies and Pixie Dust...The transformer doesn't have an impedance of its own; it only reflects a voltage (or impedance - just the square the turns ratios) from the primary winding to the secondary windings through a ratio of the number of turns of the secondary compared to the primary. Magnetic flux linkage in a ferromagnetic material due to Hopkinson's Law is why transformers transform voltage across a primary impedance, into AC voltage across a secondary impedance and subsequently into a (well matched) inductive load such as a speaker.
The amount of magnetic flux in the ferromagnetic core is dependent upon current flow within the primary coil of wire, the number of turns on the primary, and the reluctance (magnetic resistance) of the ferrite core of the transformer. That’s why the material matters for the plates that make up a EI or C core transformer. The current flow generated within the coil generates a magnetic field, which causes magnetic flux to follow the path of least reluctance. The magnetic flux then traverses through the ferrite material to the secondary windings; generating a current within the coils of the secondary through flux linkage. Voltage is then produced across the secondary terminals due to Faraday’s law of Induction.
In summary, transformers are passive lossy devices. Power in is power out minus losses. The impedance you’re changing on the secondary are strictly for maximum power transfer, stepping the primary tube impedances down to speaker load impedances. In essence, the transformer takes high voltage swings of transient plate currents from the tubes and transforms (hint, transformer) them into low voltage high current sources for the speakers.
I also want to note that there is a lot of magnetic flux stored in a transformer core - which can cause havoc to circuits when impedances are mismatched (primary OR secondary). This means mismatching secondary speakers to secondary windings reflecting an intended impedance from the plates, which may or may not be correctly matched with tube swaps to a particular transformer’s intended primary impedance, can cause transient responses which over frequency can be damaging at high volumes. Just keep that in mind.
Tell us about the metal, Donnie
lol. You said you blocked me?I'm living inside your head rent free fucker.
You don't even have the willpower to simply ignore me.
Grow up son. You've put it off long enough.
You got that confused with your Lego blocks. Get back in that play pen now.
You said you blocked me?
I think he`s hitting on ya DaveYou're mostly a good read.
Just wish you'd give the personal shit slinging a rest.
(nice touch posting all the booze to an alcoholic - was that suppose to sting or something?)
You’re mostly a good read as well, but quite often you talk down to people. There are some really smart people here and you can’t assume we are all ignorant. Had you posted something like “Let’s discuss transformers” instead of coming off as some savant trying to test people before you bestow your infinte knowledge on us, you’d be taken more serious.You're mostly a good read.
Just wish you'd give the personal shit slinging a rest.
(nice touch posting all the booze to an alcoholic - was that suppose to sting or something?)
coming off as some savant trying to test people before you bestow your infinite knowledge on us.
Thinking comes from not knowingMy apologies for having a cocky persona on internet boards.
But,
View attachment 85888
Also, fuck you.