I don't put zip files in the Dropbox.
This must have happened when you downloaded it. Please move on @OmeEd
You know @OmeEd most people that ask questions or find issues ask questions and when they are answered say thanks or give the post a like. Maybe you should consider doing the same for the people that are trying to help you. Also monitor your own posts for likes. If you don't get any maybe that's saying something about the way you are contributing to this thread.
Why are you behaving like this Stuart, it's not friendly at all. And yes, you should have moved on, but you did not.
I just checked the dropbox, and the mentioned file 1st GB Updated BOM 2023 Jan 24.xlsx is still there.
So your assumption that I have an old file is misplaced.
The zipping happens when you press the dropbox [download] button, then everything gets zipped up. Easy as pie.
I just checked the dropbox, and the mentioned file 1st GB Updated BOM 2023 Jan 24.xlsx is still there.
So your assumption that I have an old file is misplaced.
The zipping happens when you press the dropbox [download] button, then everything gets zipped up. Easy as pie.
Honestly can we just move on. This petty behavior is pointless and unnecessary.
I’ve been Reading Randy Sloan’s amp book and it has been quite helpful.
I am curious what the cap multiplier is doing?
I am curious what the cap multiplier is doing?
It's you that is posting and arguing over a trivial point. You know very well that 0.5, 1W or 2W may be used in that position without an issue.
However if you have designed a better amp please post the link.
However if you have designed a better amp please post the link.
Well I agree to this, but look what just happened above. While a polite "sorry, ......." would have been so much better.
Maybe a good moment to answer a stupid question from a noob where everybody can laugh about after a good night sleep....
https://www.diyaudio.com/community/...he-wolverine-build-thread.385920/post-7281980
https://www.diyaudio.com/community/...he-wolverine-build-thread.385920/post-7281980
Hi mhuth,
1, Q104 holes on the edge of the board are for mounting similar to honey badger for Q104, I used small leads to connect Q104 and it is attached to the top of Q110 with a tiny bit of thermal paste in between. the leads connect closer to the center of the board near the screw hole and marking "VBE" see photo below
2, Socket head cap screws have a smaller diameter than pan head screws and yes the reason is creepage and clearance distance from the output terminal.
3, I will have to defer to JJS/StuartMP on this one.
Hope this helps
-Dan
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It's hard to answer your question as some people have preferences when they populate the chassis.
I put the transformers near the front panel away from the input stage and away from the speaker cable. That doesn't mean you cannot have a different configuration.
I also use two diode bridges per channel.
Look at some of the photos that were posted for inspiration.
Thx Harry,.... yeah I did a lot of reading and looking. Its really amazing what you guys have been doing. Once I get the goodies I will test place the larger components taking into account your notes. I'll be using the 2 bridges per channel as well with no psu ground to the reservoir caps.
w.
w.
You still have to connect somehow + pole in the negative branch and the - pole in the positive branch of the reservoir caps to PSU ground. It'll make the 0V.
This is the drawing from stuarts album I was looking at. I just have to make sure to verify the polarity of both secondary windings.
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@marktd Q12 and Q13 comprise the voltage amplifier stage, usually called VAS for short. Q12 reduces the load on the input stage, and Q13 collector has the drive voltage for the output stage. It's loaded by a current source, Q10 and Q11. Sloan, Self, and Cordell all cover power amplifier architecture. You will find similar circuits in each of these tomes. Note that this is rather advanced compared to the "teaching" circuits presented in the books. However, the advanced part of Self or Cordell begins to get into the issues addressed by this particular circuit.
Thanks. I’m most of the way through the Sloan book, which has been helpful. I’m stretched financially after a move and business slowdown, or I’d buy Cordell and Self. Right now I’m slowly gathering parts for this.
Thanks @fireanimal for the technical details. I appreciate those sorts of answers. I have 50 years in electronics, but always on the digital side of things where ever smaller and lower voltage were the rule. I'd heard the term creepage, but never had to deal with it before, as everything I did was 5 volts and under and the main limitations have been feature size related to PCB vendor's capabilities. (That and transmission lines and signal delay 😎.