Richtige Fernseher haben Röhren!

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.

OLD, but ORIGINAL, Well made, Funny, Not remotely controlled............. and not Made in CHINA.

How to use the site:

- 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 ! !
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©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, January 21, 2011

ITT IDEAL COLOR 3794 HIFI CHASSIS COMPACT CHASSIS 80 DST 5861 70 22 UNITS VIEW.
















































































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Video Luminance + Chrominance with TDA3561A :44 08 08/d
TDA3561A (PHILIPS)

Luminance+Chrominance+RGB MATRIX

PAL decoder TDA3561A

GENERAL DESCRIPTION



The TDA3561A is a decoder for the PAL colour television standard. It combines all functions required for the identification
and demodulation of PAL signals.

Furthermore it contains a luminance amplifier, an RGB-matrix and amplifier. These
amplifiers supply output signals up to 5 V peak-to-peak (picture information) enabling direct drive of the discrete output
stages.
The circuit also contains separate inputs for data insertion, analogue as well as digital, which can be used for text display systems (e.g. (Teletext/broadcast antiope), channel number display, etc. Additional to the TDA3560, the
circuit includes the following features:

· The peak white limiter is only active during the time that the 9,3 V level at the output is exceeded.
The start of the
limiting function is delayed by one line period. This avoids peak white limiting by test patterns which have abrupt transitions from colour to white signals.

· The brightness control is obtained by inserting a variable pulse in the luminance channel. Therefore the ratio of brightness variation and signal amplitude at the three outputs will be identical and independent of the difference in gain of the three channels. Thus discolouring due to adjustment of contrast and brightness is avoided.

· Improved suppression of the internal RGB signals when the device is switched to external signals, and vice versa.

· Non-synchronized external RGB signals do not disturb the black level of the internal signals.

· Improved suppression of the residual 4,4 MHz signal in the RGB output stages.

· Cascoded stages in the demodulators and burst phase detector minimize the radiation of the colour demodulator
inputs.

· High current capability of the RGB outputs and the chrominance output.


- FRAME Deflection output with TDA2653A (PHILIPS)

- Synchronization with TDA1940F (ITT)


- Sound Unit and Audio Features Unit :45 08 45 - 9

- Tuner Unit + IF HF-Modul OS. FS. Paral : 5828 04 26 with TDA4442 (TELEFUNKEN) + TDA4445 (TELEFUNKEN) + SL1430 (PRESCALER)


TDA4445 SOUND IF AMPLIFIER
DESCRIPTION
TDA4445A:
Sound IF amplifier, with FM processing for quasi
parallel sound system.
TDA4445B:
Sound IF amplifier, with FM processing and AM
demodulator, for multi-standard sound TV appliances.
TDA4445Badditionnal :
Bistandard applications (B/G and L)
No adjustment of the AM demodulator
Low AMdistortion

QUADRATURE INTERCARRIER DEMODULATOR
.VERY HIGH INPUT SENSITIVITY
.GOODSIGNALTO NOISE RATIO
.FAST AVERAGINGAGC
.IF AMPLIFIER CAN BE SWITCHED OFF FOR VTR MODE
.GOOD AM SUPPRESSION .OUTPUT SIGNAL STABILIZED AGAINST
SUPPLY VOLTAGE VARIATIONS
.VERY FEW EXTERNAL COMPONENTS


GENERAL DESCRIPTION
This circuit includes the following functions :
.Three symmetrical and gain controlled wide
band amplifier stages, which are extremely stable
by quasiDC coupling without feedback.
.Averaging AGC with discharge control circuit
.AGC voltage generator
Quasi parallel sound operation :
.High phase accuracy of the carrier signal processing,
independentfrom
Linear quadrature demodulator
.Sound-IF-amplifier stage with impedance converter
AM-Demodulation (only TDA4445B) :
Carrier controlled demodulator .Audio frequency stage with impedance converter
.Averaging low passAGC


TDA4442 VIDEO IF AMPLIFIER
DESCRIPTION
The TDA4442 is a Video IF amplifier with standard
switch for multistandard colour or monochromeTV
sets, and VTR’s.

GENERAL DESCRIPTION
This video IF processing circuit integrates the following
functional blocks :
.Three symmetrical, very stable, gain controlled
wideband amplifier stages - without feedback
by a quasi-galvanic coupling.
.Demodulator controlled by the picture carrier
.Video output amplifier with high supply voltage
rejection
.Polarity switch for the video output signal
.AGC on peak white level
.GatedAGC
.Discharge control
.Delayed tuner AGC .At VTR Reading mode the video output signal
is at ultra white level



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