Here is what I see:
I was looking for single ended power stages, but did not find that option - have I missed something? 😀
I was looking for single ended power stages, but did not find that option - have I missed something? 😀
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Correct, a SE power stage would imply a SE transformer load, which is not supported by Valvalyzer at this time because SE transformers magnetize over time and are only used in old radios and maybe really cheap guitar amplifiers. But if the demand is there, we will comply.
And also in mid priced and in very expensive audiophile amps. And, unsurprisingly, in the vast majority of diy tube amps.
Well, I should have consulted with you first, before I demonstrated my archaic collection of beliefs on this subject. So would you consider it a priority to support SE power stages in Valvalyzer? I believe I could accomplish it in a few days or a week.
Yes!
I have built a significant number of them over the past 3 decades and am currently working on a new design and it would be interesting to see how output stage behavior correlates between modeled and actual. The modeling would make choosing appropriate output transformer primary Z easier for a given quiescent plate current and voltage.
I run four channels of 300B SE to drive my TAD TD-4001/Yuichi A-290 mid horns and Faital Pro HF10AK/STH100 HF horns. Most of my friends run SE amps based on everything from 45 to 845. (There are some larger ones as well) I favor amorphous core output transformers but have used nickel/steel and M6 steel cores and have not had problems with magnetized cores.
Single ended line stages using DHTs with output transformers are not uncommon either. I've designed and built a small number of them with 26, 12A, and EML20s. Other people like the 10/10Y and I have missed at least a few. I published a design several decades ago that has been moderately popular, and designed and built others to order.
Transformer coupled driver stages in SE amps are not uncommon either.
Some common beam tubes/tetrodes/pentodes make good triodes as well. (EL34, KT66, EL84, KT88 etc)
Two terminal user defined CCS that can be used as the tail in diff stage or the load in a single common cathode amplifier circuit would be extremely useful. (A three terminal device that acts as both CCS and follower would be awesome as well.)
I have built a significant number of them over the past 3 decades and am currently working on a new design and it would be interesting to see how output stage behavior correlates between modeled and actual. The modeling would make choosing appropriate output transformer primary Z easier for a given quiescent plate current and voltage.
I run four channels of 300B SE to drive my TAD TD-4001/Yuichi A-290 mid horns and Faital Pro HF10AK/STH100 HF horns. Most of my friends run SE amps based on everything from 45 to 845. (There are some larger ones as well) I favor amorphous core output transformers but have used nickel/steel and M6 steel cores and have not had problems with magnetized cores.
Single ended line stages using DHTs with output transformers are not uncommon either. I've designed and built a small number of them with 26, 12A, and EML20s. Other people like the 10/10Y and I have missed at least a few. I published a design several decades ago that has been moderately popular, and designed and built others to order.
Transformer coupled driver stages in SE amps are not uncommon either.
Some common beam tubes/tetrodes/pentodes make good triodes as well. (EL34, KT66, EL84, KT88 etc)
Two terminal user defined CCS that can be used as the tail in diff stage or the load in a single common cathode amplifier circuit would be extremely useful. (A three terminal device that acts as both CCS and follower would be awesome as well.)
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I think I have cleaned the 1080p presentation sufficiently for now, that I can get on SE power stage design (with transformer) right away. You have given me some gems to think on, and any more esoteric practical nuance that you feel would be valuable design variables ... please pass them on. Think of this as a timely opportunity to fill your Christmas list.
I'll see about supporting amorphous core in the magnetic properties.
I'll see about supporting amorphous core in the magnetic properties.
There are several amorphous core alloys depending on application and budget. There is also Hi-B, and nanocrystalline core materials in common use. I am unfortunately not very knowledgeable about the metallurgy so you may want to do some digging.
Thank you for being so receptive to our ideas, I know it adds additional work, but it will make the tools applicable across a wide range of HIFI and MI amplifier designs. 🙂
Thank you for being so receptive to our ideas, I know it adds additional work, but it will make the tools applicable across a wide range of HIFI and MI amplifier designs. 🙂
I ran the Valvalyzer updater 3.2.2879 again, and I got the message below in a popup window:
GatherReadBufferChunk failure:
GatherReadBufferChunk failed: i = 0, ReadBuffer.Count = 489984
System.IndexOutOfRangeException: Index was outside the bounds of the array.
at LicensingWebService.GatherReadBufferChunk(Int32 index, Int32 size, Byte[]& FileContents, String& error) in d:\inetpub\vhosts\ampcad.com\wwwroot\App_Code\LicensingWebService.cs:line 612
After pressing OK the Valvalyzer updater hangs with the progress bar at a bit more than half way. There was already a Valvalizer folder installed in the C:/ with probably the latest files.
Win11/Intel i7 on Samsung laptop.
GatherReadBufferChunk failure:
GatherReadBufferChunk failed: i = 0, ReadBuffer.Count = 489984
System.IndexOutOfRangeException: Index was outside the bounds of the array.
at LicensingWebService.GatherReadBufferChunk(Int32 index, Int32 size, Byte[]& FileContents, String& error) in d:\inetpub\vhosts\ampcad.com\wwwroot\App_Code\LicensingWebService.cs:line 612
After pressing OK the Valvalyzer updater hangs with the progress bar at a bit more than half way. There was already a Valvalizer folder installed in the C:/ with probably the latest files.
Win11/Intel i7 on Samsung laptop.
I had the error too earlier, so I reloaded the files and the error went away. You can try again and you should get 2880.