Richtige Fernseher haben Röhren!
In Brief: On this site you will find pictures and information about some of the electronic, electrical and electrotechnical technology relics that the Frank Sharp Private museum has accumulated over the years .
Premise: There are lots of vintage electrical and electronic items that have not survived well or even completely disappeared and forgotten.
Or are not being collected nowadays in proportion to their significance or prevalence in their heyday, this is bad and the main part of the death land. The heavy, ugly sarcophagus; models with few endearing qualities, devices that have some over-riding disadvantage to ownership such as heavy weight,toxicity or inflated value when dismantled, tend to be under-represented by all but the most comprehensive collections and museums. They get relegated to the bottom of the wants list, derided as 'more trouble than they are worth', or just forgotten entirely. As a result, I started to notice gaps in the current representation of the history of electronic and electrical technology to the interested member of the public.
Following this idea around a bit, convinced me that a collection of the peculiar alone could not hope to survive on its own merits, but a museum that gave equal display space to the popular and the unpopular, would bring things to the attention of the average person that he has previously passed by or been shielded from. It's a matter of culture. From this, the Obsolete Technology Tellye Web Museum concept developed and all my other things too. It's an open platform for all electrical Electronic TV technology to have its few, but NOT last, moments of fame in a working, hand-on environment. We'll never own Colossus or Faraday's first transformer, but I can show things that you can't see at the Science Museum, and let you play with things that the Smithsonian can't allow people to touch, because my remit is different.
There was a society once that was the polar opposite of our disposable, junk society. A whole nation was built on the idea of placing quality before quantity in all things. The goal was not “more and newer,” but “better and higher" .This attitude was reflected not only in the manufacturing of material goods, but also in the realms of art and architecture, as well as in the social fabric of everyday life. The goal was for each new cohort of children to stand on a higher level than the preceding cohort: they were to be healthier, stronger, more intelligent, and more vibrant in every way.
The society that prioritized human, social and material quality is a Winner. Truly, it is the high point of all Western civilization. Consequently, its defeat meant the defeat of civilization itself.
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.How to use the site:
OLD, but ORIGINAL, Well made, Funny, Not remotely controlled............. and not Made in CHINA.
- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.
You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.
- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.
- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.
Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !
Every CRT Television saved let revive knowledge, thoughts, moments of the past life which will never return again.........
Many contemporary "televisions" (more correctly named as displays) would not have this level of staying power, many would ware out or require major services within just five years or less and of course, there is that perennial bug bear of planned obsolescence where components are deliberately designed to fail and, or manufactured with limited edition specificities..... and without considering........picture......sound........quality........
..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!
Have big FUN ! !
©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All sets and apparates appearing here are property of
Engineer Frank Sharp. NOTHING HERE IS FOR SALE !
Friday, August 19, 2011
REX 20RM111 CHASSIS BS352.0 (90°) INTERNAL VIEW.
The ZANUSSI BS352.0 90° is a modular chassis except for some parts.
It seems bigger than the cabinet containing it but is not and it's well organized and designed.
The serigraphy layout is showing a GERMAN language and in some cases shows little spelling errors. The German language was probabily used due to export reasons, but I think they exported very few of these.
The ZANUSSI BS352.0 is derived from the BS290 which at his time was introducing the 20AX CRT TUBE and phasing out the previous BS250 with delta crt.
The BS352. has further improvements than the BS290 with lesser parts expecially in the VIDEO parts and it's capable to drive even bigger screen both VIDEOCOLOR P.I.L. and PHILIPS OR ITT BOTH 20AX.
This is the last chassis from ZANUSSI using THYRISTOR LINE DEFLECTION TECHNOLOGY AND LAST VERTICALLY PLACED CHASSIS IN A TELEVISION SET.
This here shown is the 90° degree CRT TUBE VERSION
The successive chassis in 1979 BS400 is fully transistorized and it's using SMPS supply type.
REX 20RM111 CHASSIS BS352.0 (90°) FRAME DEFLECTION OUTPUT:2N3055
The 2N3055 transistor is a silicon NPN power transistor intended for general purpose applications. It was introduced in the early 1960's by RCA using their "hometaxial" power transistor process. It was one of the first silicon power transistors, offered unrivalled second breakdown immunity and found many applications particularly in audio power amplifiers and linear power supplies.
The exact specs depend on the manufacture, it is important to reference the datasheet for the exact device and brand you are dealing with.
Packaged in a TO3 can, it is a 15A amp, 60V volt, 115W watt power transistor with a Beta of 20 to 70 at a collector current of 4A. It gained popularity because it had 100 % safe-operating-area, (SOA), meaning that it could dissipate 115W at a collector voltage of 60V (Ic=1.9A), provided the case temperature did not exceed 25 deg.C. It was designed for medium current and high power circuits. Commercially, it was used in many linear power supplies, audio amplifiers and low frequency power converters. One limitation was that its frequency response was rather slow (typically the unity-gain frequency was 1 MHz) The 2N3055 power transistor was the first multi-amp silicon transistor to sell for less than one dollar! It was a huge success in the power supply market..
With changes to the technology, the original process became uneconomical and a similar device, now using the name 2N3055 transistor, was supplied using epitaxial base technology. The maximum voltage and current ratings of this device are the same as the original, but the power handling (safe operating area) is limited at high voltage to a lower current than the original. However, the cut-off frequency is higher, so allowing the newer type of 2N3055 transistor to be more efficient in switching power supplies. Also the higher frequency response improves the performance when used in audio amplifiers. Some suppliers offer a high safe-operating-area version of the 2N3055 power transistor using the "H" suffix.
The 2N3054 transistor is a lower power version of the 2N3055 transistor, rated at 25W, 55V and 4A, but became almost obsolete about the late 1980's when many TO-66 devices were withdrawn from mainstream manufacturers's lists. In many cases a TO-220 packaged version, such as MJE3055T, can be used instead of the 2N3054 as well as in some 2N3055 power transistor applications. An MJ2955 is a complementary (PNP) transistor for the 2N3055 transistor, which is also manufactured using the epitaxial process today.