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Auction of old TV's ... in USA
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Return to top of page · Post #: 1 · Written at 9:17:56 AM on 29 August 2020.
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Location: Melbourne, VIC
Member since 5 October 2009 Member #: 555 Postcount: 467 |
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Some might be interested in this Auction ..... if not only to look at the photos ..... ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾ Cheers, Ian |
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Return to top of page · Post #: 2 · Written at 10:25:14 PM on 2 September 2020.
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Location: Lakes Entrance, VIC
Member since 28 July 2013 Member #: 1384 Postcount: 26 |
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Great pics..love to see these |
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Return to top of page · Post #: 3 · Written at 10:44:17 AM on 3 September 2020.
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Location: Werribee South, VIC
Member since 30 September 2016 Member #: 1981 Postcount: 485 |
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In USA they are spoiled for choice. |
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Return to top of page · Post #: 4 · Written at 9:35:16 PM on 4 September 2020.
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Location: Silver City WI, US
Member since 10 May 2013 Member #: 1340 Postcount: 977 |
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The last TV in the slide show, the small tabletop Motorola from the late-40's, featured a 7" oscilloscope-type tube (with electrostatic deflection) but with a white phosphor suitable for monochrome television. These small lightweight gems make a perfect little collectable (remember "small is good" when it comes to collectables!) |
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Return to top of page · Post #: 5 · Written at 2:51:25 PM on 6 September 2020.
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Location: Silver City WI, US
Member since 10 May 2013 Member #: 1340 Postcount: 977 |
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Was just helping a friend with one of these 7" Admirals - stubborn 7kV problems. So I bought mine down to fix and compare: Was shocked to see mine had twice as massive power tranny, turns out it is for 25cps power in mid-century Canada!   |
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Return to top of page · Post #: 6 · Written at 10:46:55 PM on 6 September 2020.
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Administrator
Location: Naremburn, NSW
Member since 15 November 2005 Member #: 1 Postcount: 7451 |
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Photos uploaded to Post 5. ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾ A valve a day keeps the transistor away... |
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Return to top of page · Post #: 7 · Written at 2:01:36 PM on 7 September 2020.
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Location: Silver City WI, US
Member since 10 May 2013 Member #: 1340 Postcount: 977 |
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It's a big tranny for a small TV, have never seen a 25-cycle appliance before. |
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Return to top of page · Post #: 8 · Written at 4:42:31 PM on 7 September 2020.
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Location: Belrose, NSW
Member since 31 December 2015 Member #: 1844 Postcount: 2527 |
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Yes I guess when you are flinging the magnetism around so slowly you need a lot of iron to store the energy. |
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Return to top of page · Post #: 9 · Written at 10:30:11 PM on 7 September 2020.
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Location: Silver City WI, US
Member since 10 May 2013 Member #: 1340 Postcount: 977 |
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Looking it up, we find 25-cycle power was available in Ontario & upstate New York because Westinghouse generators in Niagara were spinning at a leisurely 250 rpm. Must have smoked a lot of appliances! |
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Return to top of page · Post #: 10 · Written at 9:39:49 AM on 8 September 2020.
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Location: Melbourne, VIC
Member since 2 October 2019 Member #: 2392 Postcount: 271 |
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I have seen a YouTube video on the 25Hz model by bandersontv |
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Return to top of page · Post #: 11 · Written at 3:28:44 AM on 12 September 2020.
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Location: Silver City WI, US
Member since 10 May 2013 Member #: 1340 Postcount: 977 |
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The equivalent Motorola TV using the 7" oscilloscope type 7JP4 crt (with P4 phosphor) has almost identical circuit! I wonder who copied whom? The Motorola being a study in minimalism with the cheapest tuner ever: simply 3 ganged wafer switches under the chassis with no enclosed shielding, only shield on RF amp (6AG5) but not Mixer/Osc. (12AT7), pic. shows under-chassis tuner at left.  |
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Return to top of page · Post #: 12 · Written at 8:39:18 PM on 14 September 2020.
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Administrator
Location: Naremburn, NSW
Member since 15 November 2005 Member #: 1 Postcount: 7451 |
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Photo uploaded to Post 11. ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾ A valve a day keeps the transistor away... |
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Return to top of page · Post #: 13 · Written at 2:02:45 PM on 15 September 2020.
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Location: Silver City WI, US
Member since 10 May 2013 Member #: 1340 Postcount: 977 |
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A lightweight transformerless design. |
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DISCLAIMER: Valve radios and televisions contain voltages that can deliver lethal shocks. You should not attempt to work on a valve radio or other electrical appliances unless you know exactly what you are doing and have gained some experience with electronics and working around high voltages. The owner, administrators and staff of Vintage Radio & Television will accept no liability for any damage, injury or loss of life that comes as a result of your use or mis-use of information on this website. Please read our Safety Warning before using this website.
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