Report The Random Thoughts Thread in GENERAL Posted March 4, 2020 On 3/3/2020 at 11:37 AM, Wayside Observer said: That Philips works the same way as any other non-autoranging meter does where you push the button to chose AC or DC, crank the knob to the V, mA, or Ohms range you want to use for your measurement, hook up the leads and read the result. It’s actually very similar to this one from Canadian Tire. I fired up the other two Philips PM2423 nixie DMMs I have along with the PM2422 and hooked them up to the power supply. You can see a bit of difference in the readings between meters. Some of it’s probably the meters themselves but most of it’s probably attributable to less than good connections with the fast crappy hookup job I did to daisy chain them. IMG_6890.MOV 6.22 MB · 0 downloads It looks like I was able to squeeze in a short clip under the 10 MB post limit of the digits changing on two of them as the power supply’s output filter caps discharged after I switched it off but it isn’t the greatest footage I’ve shot so apologies for that. The one on the left was another $10 Kijiji find and the one on the right was $80, so that’s $100 worth of vintage nixie multimeters there. The power supply was $40 and all of them came from Kijiji. There are deals out there but not on eBay where nixie tube stuff commands a collector’s premium and it is possible to set up a retro workbench without breaking the bank. Yes, that’d be vacuum fluorescent displays for sure. It looks like that X10 controller has one too. They were common in VCRs and still are in microwave ovens. The carrier medium for X10 is typically the power line so you’re already half hooked up by plugging it in and turning it on. I was just wondering if you’d hooked up any of the downstream devices elsewhere and used it’s control functions. It wasn’t from a mechanic, it was from an instructor. Mechanics at trolley museums usually pretty good and stick to the facts or working theories as they’re understood to be (new information does come along and causes things to be revised in light of it as it does in any environment) and say so if they don’t know something instead of veering off into theories that are totally bonkers. Outside of shop staff, trolley museum people seem to vary wildly from what I’ve seen. As in all over the map. Let’s do another. The basis in fact behind the foam BS: Someone was operating a streetcar with a conventional K type platform controller and straight manual lapping air brake valve very slowly but eventually got it up into parallel with a bit of speed. The foam BS: I’ll just quote this one. “She’s only running on one motor now and I can feel it, she’s getting tired.” The truth: If your streetcar is down to one working motor, regardless of whether it’s a two motor or a four motor car, you’d better be moving it with the dead motors cut out. When you do that, throwing any of the motor cut out switches in a K how platform controller, it causes a lever to move into position where it blocks the controller from being moved past full series. Since the streetcar did finally pick up some speed once the guy wound it up and got it into parallel, we know for certain it was on the full complement of motors. This one actually caused three of us to have a WTF moment among ourselves later. I was disarming people by saying my experience is mainly with operating and maintaining PCC cars and we had a good laugh at the way I framed it. Anyways, electronics with K controller references, yes shhh it’s true I can do pre-1936 equipment too, but yeah we’d better not let HCRR see this post either. Actually, speaking of K controllers, HCRR, and trolley museums in general, the whole limit the streetcar to series only routine is usually accomplished by doing exactly that, throwing a motor cutout switch in the controller. There’s probably a good chance if you pop the cover off the controllers in 2424 or 2894 and cut all the motors in, you’d have the whole range back on those cars. Well, we’d definitely better not let them see this post! Thanks for that. Nice video. I assume the machine at the top-right has a red filter to get the text to look that colour? I also noticed how quickly the numbers change without fading. I have never seen a Nixie tube display in person so I had no idea. Thought it would fade like a light bulb. I will definitely keep my eyes open on Kijiji or other places like estate sales if those are around. I don't have any electronics projects lined up (and haven't for years) but I'll find something if I can make use of a beautiful machine like that! Oh ok. I don't have any devices compatible with the X-10 (at least to my knowledge) so I wouldn't be able to test if this thing still works. It was a bit dirty when I got it. I wonder. How did they keep a machine like this from turning off your neighbours appliances? I see. You'd think instructors would simply ask the mechanics if there's something they don't know. LOL thanks for that info. I haven't been to HCRR in nearly 20 years. I rode a couple Witts there a few times but they never made that motor whining sound. Does that series-limit have to do with that? The montreal suburban car and the snow plow I rode there once were pretty fast. Hard to believe those were in series. I imagine they have the old style controller as well. Do they even bring those cars out to ride anymore, by the way? I also remember riding the Rail Grinder (the old single truck one) but that wasn't going very fast.