As someone who goes builds a lot of amps with line level transformers and has spent the better part of the last month measuring nanovolt levels of...
It depends. Step one is of course to remove the DC stimulus, so it's worth actually measuring if your specific DAC does that. I'm fairly sure the...
I've been extensively measuring transformers for some time and came across some idiosyncrasies when looking at the distortion surfaces. Ideal...
It looks like you're running a common mode choke (the Triad CMF23H-103231) with the windings in series? I'd be cautious with this sort of...
Agreed, I don't think the square waves tell us anything that the frequency (and phase) response don't already tell us. And with the frequency...
If you're not already familiar with it, it might be worth taking a look at Susan Parker's amp. I'd give some thought to leaving the OPT on the...
Sounds like a problem for a cascode. This is how people have been getting around the dissipation limits of the LU1014D at diyAudio. I would...
I gave this a shot with a 47 ohm resistor to terminate the secondary, and measured at 200Hz, 2kHz, and 20kHz. Image attached because it's huge....
This is a really cool project. SE JFETs sound great, and hats off for not using up 42 rare and expensive JFETs when the J112 is probably the...
I'm working on an amp that I had intended to build with nanocrystalline core output transformers, but recently had the opportunity to pick up some...
On the off chance someone needs a 1mA current source/sink, I measured a bunch so that you don't have to. People who enjoy poor data visualization...
I've been using the LND150 boards for the better part of the last decade. They've just been waiting for their prime time. :) It shouldn't be too...
You'll need two in a +/-24V arrangement if you want to DC couple the inputs. That's right. The original schematic runs the tube in cathode bias...
Here's one option. [ATTACH] You may need to tweak the value of R2. This sets the current running through the tube, and therefore how much...
This lines up with my experience, too, when designing equipment and measuring finished pieces. When comparing two iterations of the same...
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