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Here is an intresting article about the production of tv in France an it's cost: https://ebha.org/ebha2007/pdf/Gaillard.pdf
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Oh, "Thomson" had a pretty decent sound on '80's made tv sets.
I would like to see a French color tv set that haves at least 10 tubes into it. In Romania, in 1967 only Bucharest still had 120 Volts and only on parts of the city (usually the central and semicentral area). Since electrification rate was low in pre-communist Romania, it was easy to get to the 220 Volts - 50 Hertz (Cycles) the whole low voltage network. Complete tranisition to 220 Volts of Bucharest... 1976. |
US homes have both 120 and 240 in them. Its 3 wires from the pole. The pole transformer is 240 volts center tapped. The center tap is connected to earth ground.
Most devices in a US home are 120. Heavy power devices are 240 such as electric clothes dryer, hot water heater, air conditioner, electric stove. Most post war (WW2) homes were wired that way from the beginning. NOW, the commercial/ industrial industries use a variety of voltages. 277 is common for large lighting systems. 208 (3 phase, 4 wires) is used for large motor devices, air conditioners, etc. And then there is 460 (3 phase) that's used for high power radio and tv transmitters and such. |
Very intresting. I will open a separate topic (thread) for it.
In Bucharest we had 3 phase - 208 Volts. For electric cooking machines, if you wanted to install in a house. You could get 220 Volts too, but they dindn't made the network that way. Some people got 220 Volts using 2 phases, trough all that it was against the regulations. It was a good thing that French tv sets had transformers. Better protection. |
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Here's a typical 120/240 electric panel in a US home.
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Very surprised to hear 120 volt was ever used in Europe. Always knew Japan had 110vac though.
Standard service is 240 volts in UK/Europe, just like US 240, but its just 2 wires (line and neutral) and 50 Hz, not 60. For industry and commercial use in Europe, 220/380volts was the early wye and 240/415 the present wye 3-phase voltage, which use a neutral conductor. US has 3-phase in 2 standard wye configurations (208/120 and 480/277) Canada uses 600/347 wye instead of 480/277, as if that weren't enough. USA, prior to WWII, used 220 three phase delta with no grounded conductor, just an equipment ground. 440 also used as a delta in larger users. I will spare the details on two-phase and 25 Hz, since it was early but appropriate for the times then. Last, there is the 240/120 volt three phase delta, where one of the phases (usually B) is the "wild leg" and the other two, A+B are each 120 volts to neutral. This requires separate 240/120 single and 240 three-phase circuit breaker panels. Lastly - Salute to both Nikolai Tesla and George Westinghouse, co-inventors of three-phase ac power!:thmbsp: |
Yes, I remember the old timers talking about 3 phase delta distribution, when I was a summer intern at SCE&G. The reason they went to wye was because, if a primary fell down, it would not blow a fuse or trip an OCR, because the earth was floating with respect to the primaries. It would just lay there and electrify the earth close by. Very unsafe.
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Here is a discusion about electricity: http://videokarma.org/showthread.php...06#post3240406
Yes, there where 120 Volts in Europe. 3 phase in some cases was 208 Volts. Probably 120 Volts was of U.S.A. inspiration. And back then there wasn't a general standard. So there where 42 Hz. sometimes in stad of 50. I wonder how good where the French color tv sets compared to the U.K. ones. More about television then tv sets :) https://telesatmedias.com/le-passage...-1er-oct-1967/ Here are some French colour tv sets (I like the "Schinder" very much): https://radio-piffret.pagesperso-orange.fr/TV.htm In 1969 there where 135.000 color tv sets in France. In 1973 there where arleady 1.045.000 (1,045,000) versus 12.660.000 black and white. So about 1 in 10 tv sests was colour. I wonder why France was so slow in allowing private tv station to broadcast. |
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https://www.barco.com/en/about-barco/history/timeline I have some TV sets from them. For some reasons they were sold under COBAR! Regards, TV-collector :stupid: |
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