Hi Thomas, that power supply slowly has more sockets than parts 😂 how lucky that today's power supplies are smaller, I have nowhere to work with this power supply on my desk 🤪 Nice day 🙂 Tom
I restored mine just last year; already served me well for some tube and neon bulb issues ^^ - the current shunt is probably not always connected because it would be heating up and the meter is extremely sensitive. pegs at some µA if I recall correctly. so the shunt should be extremely low and finely tuned. If memory serves, it was just a piece of coiled up wire...
when reinstalling knobs, I like to put a piece of thin cardboard - one or two layers of a lid of a supermarket pack of cigarette paper is great - under the knob and pull it out after the knob is installed. You get all the knobs on at a consistent height that way easily.
Something about these spring loaded tube holders is scary ... handling them always feels like you are one slip up away from smashing the top off your tube, especially when they are in a more constricted space like in VTVMs and need to be opened with tools...
glad to hear i am not the only one who feel like this, super scary if they slip then bang broken tube, but i like the idea to hold tubes carefully onto the socket, many times i repair old stuff, the problem is tubes halve way out the socket .
what a beast
Useful for valve/tube projects in the lab.
It certainly looks Stabil!
Hi Thomas, that power supply slowly has more sockets than parts 😂 how lucky that today's power supplies are smaller, I have nowhere to work with this power supply on my desk 🤪
Nice day 🙂 Tom
I restored mine just last year; already served me well for some tube and neon bulb issues ^^ - the current shunt is probably not always connected because it would be heating up and the meter is extremely sensitive. pegs at some µA if I recall correctly. so the shunt should be extremely low and finely tuned. If memory serves, it was just a piece of coiled up wire...
Very nice! Cool job on your socket adapter! ~Jack, VEG
Thanks! it is always a bit fun when more hobbies can be merged, electronics repair, 3D design, 3D printing go very well together
when reinstalling knobs, I like to put a piece of thin cardboard - one or two layers of a lid of a supermarket pack of cigarette paper is great - under the knob and pull it out after the knob is installed. You get all the knobs on at a consistent height that way easily.
Something about these spring loaded tube holders is scary ... handling them always feels like you are one slip up away from smashing the top off your tube, especially when they are in a more constricted space like in VTVMs and need to be opened with tools...
glad to hear i am not the only one who feel like this, super scary if they slip then bang broken tube, but i like the idea to hold tubes carefully onto the socket, many times i repair old stuff, the problem is tubes halve way out the socket .
The shunt should have been placed between the cathod and the feedback divider. Shame on Grundig 😅
EL34 + adapter = hole in steel box.