Here's my new baby. 15 watts of triode connected EL34.
Only thing original from ST70 is the trannies. Everything else is custom. Top plate is nickel plated. Last time I make it that thick ! Really hard to punch those holes, and takes forever to drill.
Thanks to kevinkr for the schematic. Fantastic detail, I was quite surprised by the clarity, and being able to distinguish individual voices singing in harmony. Difficult to turn off.
http://www.just4sheep.com/st70-1.jpg
http://www.just4sheep.com/st70-2.jpg
http://www.just4sheep.com/IR.jpg
Only thing original from ST70 is the trannies. Everything else is custom. Top plate is nickel plated. Last time I make it that thick ! Really hard to punch those holes, and takes forever to drill.
Thanks to kevinkr for the schematic. Fantastic detail, I was quite surprised by the clarity, and being able to distinguish individual voices singing in harmony. Difficult to turn off.
http://www.just4sheep.com/st70-1.jpg
http://www.just4sheep.com/st70-2.jpg
http://www.just4sheep.com/IR.jpg
zigzagflux: " ... $50k camera ..."
I was hoping for clues as to how to do that with something a little more cost effective. The anlysis of heat signatures in electronics circuit boards and parts is done regularily by the major manufacturers, HP and the like ... I had always wanted to do that with my DIY designs. Got a link to the camera specs??
I was hoping for clues as to how to do that with something a little more cost effective. The anlysis of heat signatures in electronics circuit boards and parts is done regularily by the major manufacturers, HP and the like ... I had always wanted to do that with my DIY designs. Got a link to the camera specs??
FastEddy said:
http://www.flirthermography.com/cameras/camera/1060/
That would be essentially the model we use. Sure, you could use infrared film, but infrared imaging cameras allow you to, pixel by pixel, measure the temperature, along with the ability to program emissivity. Infrared film does not actually measure temperature, it only provides an image with relative color.
I can tell you, within a degree, how hot the LM317 heatsink is running, or how hot the plate resistor is. Very beneficial. That all assumes I got the right emissivity, of course.
Hi all!
Here is a photo of my 6C33C-B circlotron amp:
For a description see thread 6C33 design comments
My amp from above:
Uli
Here is a photo of my 6C33C-B circlotron amp:
For a description see thread 6C33 design comments
My amp from above:
Uli
Ulibub.
That has to rank as one of the highest tube count, busiest amplifier constructions i have seen. Obviously an enormous amount of time there and if you developed the circuit yourself, much more time that cannot be seen. I haven`t read your description yet.
The Hg rectifier tubes add a nice visual touch.
Nice job!
That has to rank as one of the highest tube count, busiest amplifier constructions i have seen. Obviously an enormous amount of time there and if you developed the circuit yourself, much more time that cannot be seen. I haven`t read your description yet.
The Hg rectifier tubes add a nice visual touch.
Nice job!
