Power supplies in the RF frequency tend to become radio transmitters if they aren't designed carefully though...
I am clearly not building a radio so not understanding how it applies.
Again, with the rectifier not converting AC to DC as many articles online say and AC not affecting the signal, what then is the point of filtering?
Why even have them supplying an amplifier?
You understand what the heck he is meaning by saying amplifiers only use AC current and that rectifier's are not for converting to DC? I checked and oddly this schematic is showing DC voltages.
Not all amplifiers... I think what he's saying is you can use AC if the frequency is high enough (radio)... It only works half the time, but if the frequency is high enough you won't notice.
I still think there's a diode though. Pulsating DC doesn't reverse, AC does.
Much like a modern car headlight runs using PWM, you don't notice the flicker with your eyes (most people don't anyway), but if you use a timelapse camera, the light turns on and off.
For the purposes of a 10W tube amp for you to build, I'd stick with a traditional DC supply.
I still think there's a diode though. Pulsating DC doesn't reverse, AC does.
Much like a modern car headlight runs using PWM, you don't notice the flicker with your eyes (most people don't anyway), but if you use a timelapse camera, the light turns on and off.
For the purposes of a 10W tube amp for you to build, I'd stick with a traditional DC supply.
Not so with a bridge rectifier. You could also use overlapping souces ( quadrature ) then no gap is noticed on the tubes.
Oh! Ah ha! I was looking at regenerative radio circuits and totally missed they are AC, here is the one I am considering.
DC supply to what?
In case a 50/60Hz power transformer is used you don’t want any of this frequency disturbing your audio signal. Then, yes ! You will have to use filtering.
If I am understanding correctly, there are two, one for filaments (L1 uses two diodes) and one for the amplification (L1 uses a bridge rectifier). As I understand, with a PP, DC filaments offer insignificant benefit.
The issue with diodes is the switching noise and reducing tube life by the voltage spike when turn on, tube rectifier slowly powers up the tubes.
The AL simply asks for 310VDC B+, by the way.
😆 I am a tactile learner, then visual, and forget auditory/reading (get barely anything from it) so it is easier to understand with examples. José (@jcalvarez ) and @kodabmx seem to understand as provide, or work with provided, examples.
In reality, there's no issues with switching noise or tube life unless you're up around 1kV...
My amps use 320V (and 600V)...
Here's a schematic of my "DBL QUAD" (voltage doubler and quadrupler)... Works very vell and won't bankrupt anyone.
600v on an EL84 is not standard and i would advise against these high voltages for a first build.
The doubler part gives 320V. perfect for an EL84-based amp. You still need something to feed the heater though.