A local seller posted a design based on these schematics and Im unfamiliar w/ the topology and/or schematic design. Does anyone know what circuit these are based on or what power I'd be expecting from it?
Looks like three schematics, one for a 6080/6AS7 power supply with dual GZ34 rectifiers that provides stabilised 420V at several hundred mA. The designer is pretty good, i see no obvious errors, allthrough EF86 as an error amplifier would not be my first choice.
Second is a 300B amplifier driven by a SV83 pentode, not a bad design, a classic in its own right, about 7W should be the output power of the 300B SE.
The last seems to be a simple 6SN7gt preamp.
Second is a 300B amplifier driven by a SV83 pentode, not a bad design, a classic in its own right, about 7W should be the output power of the 300B SE.
The last seems to be a simple 6SN7gt preamp.
Petertub -
Right click on each link -
Click on--view image -
If image not appearing on link click on long slotted box to make image appear .
Its a propriety type link.
Right click on each link -
Click on--view image -
If image not appearing on link click on long slotted box to make image appear .
Its a propriety type link.
I like that tube power supply too, it reminds me of a smaller one in a tube Tekronix scope featuring a 6080 outputting 100ma for a single tube .
More than one button is too complicated for Apple.
Meanwhile, my mouse has 17 programmable buttons. Go figure 😛
Meanwhile, my mouse has 17 programmable buttons. Go figure 😛
If that 6080 tube supply is meant for the 300B amp, my hats off to the designer, very few people have the courage to see something like that trough in an amplifier design.
Macs have always had a right click option, if you use a two button mouse.
The Apple mouse leaves something to be desired anyway, try a Logitech instead.
Their cheapest one is excellent, I've used it for years.
Logitech M100 Optical USB Mouse with Ambidextrous Design
Didn't know that never owned nor worked on an Apple Mac nor took an interest in them other than checking out their vulnerability to malware .
My problem with them is like MS they are pretty controlling although they have much better aspects than Windows.
Thanks for the info never too old to learn.
The 300B-SE schematic is Thorten Loesch's 'Legacy', designed in the 1990s. He wrote it up on here about 18 years ago, search around here for the interesting text. Thorsten derived it from the work of La Maison de l'Audiophile.
It works very well with many types of driver pentode (I liked the 6BW7 best) - so long as they driver gets its own supply. IMHO it was probably the best performing (and sounding) 300B-SE until superior solid-state assisted driver designs supervened.
It works very well with many types of driver pentode (I liked the 6BW7 best) - so long as they driver gets its own supply. IMHO it was probably the best performing (and sounding) 300B-SE until superior solid-state assisted driver designs supervened.