I'm hearing Pa is moving his entire production here ; main reason is Amperage bill , same as fact that here ppl can have properly strong amps , directly mains powered ;
and audiograde fuses are weaker , so cheaper
(not mentioning fact that I can listen da muzak , and drying my hear , in same time )
6L6, I look forward to your write-up on your F5T build. Your write-ups are outstanding with excellent photos. I have your previous writeup on the O2 bookmarked.
Is there any post that talk about heat dissipation, as far as what is needed for heat sinks. I ask as I am interested in maybe sourcing some heat sinks.
Thanks
Thanks
After I thought about that for a min. A heat sink thats 6"x6" with 1" tall fins would be about right.
on heatsinks... I think that ones from the store chassis have a bit to thin base. With not enough thickness of the base you can have a big temp. gradient(hot near transistor and cool further). Thats what I have with my F5T. I ordered 3/8"x6"12" aluminum bars and will use them to increase base thickness of my sinks. I will let you know if it helps.
Does them being black anodized really make a difference, I was looking these. I can get them cut to length.
7.280" - HeatsinkUSA, LLC Store
Unless there is something better then that, for aftermarket.
7.280" - HeatsinkUSA, LLC Store
Unless there is something better then that, for aftermarket.
Another thing, I just have no ideas how sinks for the store (or hifi2000.it) have such good dissipation numbers. From my humble knowledge ones from heatsinkUSA should be much more efficient, but they not...
They are black anodized, the HeatsinkUSA are raw. That will make a difference.
Of course, you can anodize the HeatsinkUSA 'sinks and make up said difference.
Of course, you can anodize the HeatsinkUSA 'sinks and make up said difference.
I posted a link in the Solid State heading but as the F5T makes use of a MOSFET output stage I thought I'd ask the question here too. Can anyone please give me an answer on what the difference is between placing the series resistor between the mosfet Drain and supply vs placing the resistor between Source and the load.
On my simulation the series R between Supply rail and mosfet Drain gives the lowest harmonic distortion figure, why?
Here is the original post with schematics of the final stage
http://www.diyaudio.com/forums/solid-state/231535-rd-rs-mosfet-output.html
On my simulation the series R between Supply rail and mosfet Drain gives the lowest harmonic distortion figure, why?
Here is the original post with schematics of the final stage
http://www.diyaudio.com/forums/solid-state/231535-rd-rs-mosfet-output.html
Reduced degneration. More gain for feedback. Dont trust the sims too much, from what i have heard.