Stromberg Carlson TC-19-L2 scored :)

[bandersen]

I haven't measured it but just going my the filament brilliance it's more than I ever do manually.

Yes, I have used the auto and manual restore/rejuv functions on a Predicta and it didn't blow out the filament. I suspect it's going a certain % higher than the filament voltage setting.

Not sure if a LM317 would work since although it's DC it's not filtered.

[NoPegs]

Originally Posted by bandersen

I haven't measured it but just going my the filament brilliance it's more than I ever do manually.

Yes, I have used the auto and manual restore/rejuv functions on a Predicta and it didn't blow out the filament. I suspect it's going a certain % higher than the filament voltage setting.

Not sure if a LM317 would work since although it's DC it's not filtered.

I'll investigate this further via an actual lash-up possibly this weekend. My initial hypothesis is that the LM317/350/338 will just act as a peak-clipper. I also forgot to consider that the duty cycle is going to be something around 33% instead of 100%, so that helps the TDP side of things. Hell, it might be entirely possible that just a diode and a regulator will let you run strings as low as 35v off mains. I'm also curious to see how it affects the initial warmup. It might actually take longer than a thermistor, because the hard maximum is 595mA in the example I gave. I intend to find out for us all.

[bandersen]

Cool - good luck!

[bigaudioal]

Nice set Bob. Love the roll bar chassis setup!!!

[Stromberg48]

Can't remember where I got this pic from, but it's labelled TC18-LX as the model number...It's slightly different than the New Yorker, just slightly. I don't have the model label picture so we're at the mercy of the photog and have to take their word that this is a TC18 model.


Second one was from my unidentified folder, but its a "classic" model so we'll label it unknown "18 or 19" classic with a 1409 radio.

[Electronic M]

Background on the top one appears to be the inside of the early television museum.

[Stromberg48]

Originally Posted by Electronic M

Background on the top one appears to be the inside of the early television museum.

Yup it sure is http://www.earlytelevision.org/stromberg_tc-18lx.html
So we can definitely take their word for it.
I have so many forum, CL, and bay photos It's hard to remember where things come from after they kick around in folders a few years. and usually they don't show the label...I don't like taking others word on the model unless I see the label, but I think an exception is due for the TC18.


The 17T1

[bandersen]

I'm working up an order for parts right now

This set has one of those caps rated in impedance rather than Farads. It's used to bypass the centering controls.

2.5 ohms @ 60 CPS
0.5 ohms @ 15750 CPS

Using this Capacitor Impedance Calculator gets me 1,061uF and 20uF. I'll go with standard values of 1,000 and 22uF.

[bandersen]

Here are some better photos of the front of the set I took while moving it to my new climate controlled storage facility. I do have that broken off piece at the bottom and will glue it back on.

No idea when I might get to it, but I'm really itching to. Nice thing is I can leave the cabinet and big CRT in storage while I work on the chassis with a little test CRT

[Kevin Kuehn]

Cool. Looking forward to the video.