Here are some photo's and projects that you should find of interest - hope it helps.
DIY Vacuum Tube (Valve) Amplifier Projects - Hi-Fi Audio
DIY Vacuum Tube (Valve) Amplifier Projects - Hi-Fi Audio
Page through the photo gallery. You'll find plenty of examples of P2P wiring. You'll find examples of how to do it properly, and how to just connect the dots and hope for the best.
Morgan Jones has a book on building valve amps. It contains many tips - including tips for P2P wiring.
~Tom
Morgan Jones has a book on building valve amps. It contains many tips - including tips for P2P wiring.
~Tom
Here are several hi-res photos of my point to point constructions.
http://kuva.termiitti.com/image/14866.JPG
to
http://kuva.termiitti.com/image/14878.JPG
13 pcs. all together. (just change the number xxxxx.jpg)
The main thing is that the lay-out should be done "in paper" first.
After this you can take the drill and go ahead.
http://kuva.termiitti.com/image/14866.JPG
to
http://kuva.termiitti.com/image/14878.JPG
13 pcs. all together. (just change the number xxxxx.jpg)
The main thing is that the lay-out should be done "in paper" first.
After this you can take the drill and go ahead.
Here is one from the age when pcb was not even invented.
Looks nice.
http://www.technicalaudio.com/pdf/G...Linear_Williamson_Amplifier_w_A-8072_xfmr.pdf
Looks nice.
http://www.technicalaudio.com/pdf/G...Linear_Williamson_Amplifier_w_A-8072_xfmr.pdf
That's some GREAT work. You don't happen to have some more pics of the build process, do you?
Hello Marino!! from reading your bio information it looks as if you are new here and I take this opportunity to give you a warm Welcome to diyAudio!!!
Stunning work on the amplifier. Absolutely well thought out and the construction shows the builder (yourself?) has many years of training and experience. Sweeeeeeeeeeeeeeeeeeeeeeeeeeet!!!!
BTW - I have 40+ years building, repairing, modifying, and overhauling to "like new" condition electronics stuff and learned my licks on tube circuits. I was trained to solder to NASA standards and also ran the Quality Control department in my later years - So my assessment of your skills comes from one who knows.....
artosalo - I just saw your post over in the other thread - great work you have done!!! Wonderful!!!
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Great work SG - plus it shows one of the "little tricks" used by those in the know - that of having a "layout" of the circuit and placement of components.
Sorta reminds me of and electronic "paint by the numbers" kinda thing - except I suspect that you created the "original art".
I remember when we used to make up wiring harnesses - a sheet of plywood - trace out the circuits onto the plywood - drive in some nails (small heads on the nails) and learning how to "lace" the harness. Man - did I make a buncha doz things!!!
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Yeah, I like the "roadmap". At work I make them for test fixtures and SMD circuit boards. Sometimes they are simple pencil on paper shoved through the scanner and emailed. Other times they are elaborate Powerpoint slides in multiple colors. That depends on the target audience. They are all called "the Big Dumb Blonde Ones guide to hookin s*%t up", or just the BDBO diagram. Often my tube stuff is made up as I go along, but I do make diagrams sometimes. Other times I take detailed pictures of my experiments so I ca recreate them later.
Here is an example of how NOT to do PTP. The miracle is that it worked on the first try. Now anyone care to duplicate it?
Here is an example of how NOT to do PTP. The miracle is that it worked on the first try. Now anyone care to duplicate it?
Attachments
Here's another example of how not to do point to point. The amazing thing is the 47P-P amp has been in almost continuous use since 2003. Currently it is driving the tweeters in the main system.
The only failures have been the mica washers on the heatsinks of the output stage CCSs. The mica washers would start to break down and get leaky but not short. PITA to try and figure out where the current was going that it was not supposed to.
The failing mica washers is one of the main reasons that I try to use fully encapsulated parts now. You lose some power capability but you gain safety and long term stability.
Topside-
The only failures have been the mica washers on the heatsinks of the output stage CCSs. The mica washers would start to break down and get leaky but not short. PITA to try and figure out where the current was going that it was not supposed to.
The failing mica washers is one of the main reasons that I try to use fully encapsulated parts now. You lose some power capability but you gain safety and long term stability.
An externally hosted image should be here but it was not working when we last tested it.
Topside-
An externally hosted image should be here but it was not working when we last tested it.
Hello Marino!! from reading your bio information it looks as if you are new here and I take this opportunity to give you a warm Welcome to diyAudio!!!
Stunning work on the amplifier. Absolutely well thought out and the construction shows the builder (yourself?) has many years of training and experience. Sweeeeeeeeeeeeeeeeeeeeeeeeeeet!!!!
BTW - I have 40+ years building, repairing, modifying, and overhauling to "like new" condition electronics stuff and learned my licks on tube circuits. I was trained to solder to NASA standards and also ran the Quality Control department in my later years - So my assessment of your skills comes from one who knows.....
artosalo - I just saw your post over in the other thread - great work you have done!!! Wonderful!!!
Glad to hear you like it!
New on a forum, but 38 years of experience.
Picture show one of three pieces made from January till October 2010. Prototype is still sweet sounding in my audio system while other 2 pieces were sold. I'm using it with a Benz Micro Ace LS on my Linn Sondek with Alphason Delta arm.
Ahhhhh- a good TT is on the project list. Of course it will have to be DIY!!!!!!
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