(A)
Alex Kitic wrote:When I mentioned 45mA current per channel, I was referring to the combined current draw of the EL84 and the driver. I estimate the driver at 3mA and the output tube at 42mA. When I say estimate, you have to take into account that I designed it more than a decade ago and I have not reviewed the simulation for a long time, particularly not reviewed the current draws.
(-A)
Therefore, when I say 45mA per channel, I know what I am saying. You never built one
Which is it? (A) "45ma" is an "estimate" that we all "have to take into account that I designed it more than a decade ago." Or, (-A) "when I say 45mA per channel, I know what I am saying."
A and -A cannot be true together. Either the amp draws more than 45ma per channel or it draws exactly 45ma per channel.
You never built one
I never grew an artichoke, but I know better than to plant one in a toxic waste site.
It is absolutely pointless discussing whether it is a few mA more or less (and imagine how stupid I feel when I think of having discussed my own design with a person who has never designed anything, but seems to know everything there is about the world around us...) in a world where a transformer with 2x 18.9VA secondaries (total LT 37.8VA) and 2x 50.6VA secondaries (total HT 101.2VA) totalling 139VA is wound on a core which is actually defined as 100VA core (we are already 39% above the rating), and the text markets it as capable of at least a further 20% rating (which probably should mean that other transformers are wound along even lower standards)... which brings us to approximately 167VA (on a 100VA core) -- in the meantime, I order a custom transformer of 135VA to be wound, where the manufacturer chooses for me a 150VA core and hints me that I might be even more pleased with a larger core and calculation for heavy duty standard, as that is definitely not going to buzz... hahaha!
The RH84 needs approx. 90mA of current to operate normally. If we presume a CT HT secondary and a choke input, the necessary I AC of the secondary should be more than 0.09 / 1.54 = 0.0584 A. Therefore, 100mA AC current must be enough...
For cap input, same condition, 0.09*1 = 0.09 A, thus 100mA AC current must be enough.
This has nothing to do with transformer manufacturers and the supposedly latent current increase of their transformers. It has to do with you advising other human beings to construct an amp with a power supply which has a DC current capacity of 90ma, 100ma, 140ma or 86ma - three of which are incapable of running this amp correctly. I gave the math that a FW supply requires an AC current rating of 1.2 times its required DC current draw.
When people lack rational arguments, ad hominem attacks and self-appeals to authority are always available.
