A very very crowded restoration project. Waterman Pocketscope S-11-A.
Tube produces a spot, didn't dare test it more until I replace the electrolytic and paper caps. Is that square thing a really big paper capacitor!?
(And on closer inspection, one of those tubes is definitely gassy.)
A very very crowded restoration project. Waterman Pocketscope S-11-A.
Tube produces a spot, didn't dare test it more until I replace the electrolytic and paper caps. Is that square thing a really big paper capacitor!?
(And on closer inspection, one of those tubes is definitely gassy.)You have at least one tube you will be replacing, the second picture right hand the tube closest to the right side has lost its vacuum.
That is a cool scope, fun resto project.
And for when I get around to studying embedded controllers
USB Logic Analyzer Device USB Cable 24MHz 8CH 24MHz for. $12, US shipped.
Wow, that 411A looks nearly pristine! Nice and clean, but for the scuffs at the top of the meter bezel.
Sweet!
-Pat
<edit to add> - or is that paint or something on the meter bezel? Might clean off easily. Even better, if so.
Pulseview should support it. Just look around here:
https://sigrok.org/wiki/Supported_hardware#Logic_analyzers
or ask Sigrok. They are very responsive.
Yeah, scrubbed it right off this morning with isopropanol on a kimwipe. There are some scuffs on the paint on the outer case, but I don't mind. Certainly in better condition than a lot of things I've paid a lot more for. It clearly has some out-of-spec components, the bias adjust is cranked way over to get it zero-able. Ironically though, this incadescent lamps and motor-driven interrupter may have a longer lifespan than later neon-lamp choppers.
Do you think I can use this to determine the anode resistor for my Nixie project? They are running at 170 V and 5 mA, but the resistors in it look like they would even survive a short with these values (> 1 watt rating?). The case has a ground connection, which is a good idea for additional safety, and the resistors look pretty good isolated from anything. Would be easier than using a potentiometer, and I don't even have one with decent power loss rating.
[...] but the software disk is missing!
http://icy.bioimageanalysis.org/
Help, I'm not only cursed with TEA, I also have VIA (vintage iron addiction)
Just got this WWII vintage 15 inch shaper back into action. It's a late Swiss VonRoll "Original Schaerer" SH-400 Shaper/Schnellhobel/Schnellhobler. Bought it last summer on tutti.ch for a good price (13ct/kg ), after some old toolmaker had died and the relatives didn't knew on how to use it and thus wanted to get rid of it ASAP (a somewhat familiar story ).
Since it had to be transported trough some doors and inside my van, I had to disassemble it as much as possible. Thereby it arrived more or less as a parts kit. Unfortunately stupidMe tipped over the main body casting during loading which cracked the clutch hinge. Fortunately I was able to repair it using an oxyacetylene torch and some silicon bronze (CuSi3Mn1).
Finally got everything back together this weekend and could make my first chips on that machine. Because it's nice to watch in action, I made a video of it:
Shaper was build sometimes around 1948, I believe, production of this kind of machine started around 1940, during WWII. It's in beautiful condition, has 6hp 3phase motor installed and weights around 1600kg/3200lb fully assembled (don't ask me how I got that transported inside my van ). Other than that, it's rather compact and can remove metal like no other machine I have. Found some 1cm wide and 1.5mm thick chips inside the oil sump . Also got tons of HSS tooling, the vice and a gear cutting fixture along with it. A great addition to my Maho, where the servo controller is still bitching (my next project, TCA280 replacement board Rev 3.0 )
Also scanned the 70year old manual, since it was heavily used and deteriorating. It's available here:
https://archive.org/details/18.pngJoined