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 !
Tuesday, January 25, 2011
PHILIPS 28PW6302 /00 " Black Line S " CHASSIS MD1.2E AA INTERNAL VIEW.
The PHILIPS CHASSIS MD1.2E AA is realized on two boards, Small signal vertically mounted and large signal on the bottom horizontal.
This kind of chassis remembers the past of PHILIPS K9 and K11 and K40 chassis types even realized with the same division concept.
It has Digital sound processing and a TDA8366 for all Video processing features.
THE TDA8366 is an I2C-bus controlled PAL/NTSC TV
· Multistandard vision IF circuit (positive and
· Video identification circuit in the IF circuit which is
independent of the synchronization for stable On Screen
Display (OSD) under ‘no-signal’ conditions
· Source selection with 2 Colour Video Blanking
Synchronization (CVBS) inputs and a Y/C (or extra
· Output signals of the video switch circuit for the teletext
decoder and a Picture-In-Picture (PIP) processor
· Integrated chrominance trap and bandpass filters
· Integrated luminance delay line
· Asymmetrical peaking in the luminance channel with a
(defeatable) noise coring function
· PAL/NTSC colour decoder with automatic search
· Easy interfacing with the TDA8395 (SECAM decoder)
for multistandard applications
· RGB control circuit with black-current stabilization and
white point adjustment; to obtain a good grey scale
tracking the black-current ratio of the 3 guns depends on
the white point adjustment
· Linear RGB inputs and fast blanking
· Horizontal synchronization with two control loops and
alignment-free horizontal oscillator
· Vertical count-down circuit
· Geometry correction by means of modulation of the
vertical and EW drive
· I2C-bus control of various functions
· Low dissipation (850 mW)
· Small amount of peripheral components compared with
· Only one adjustment (vision IF demodulator)
· Y, U and V inputs and outputs.
The TDA8366 is an I2C-bus controlled PAL/NTSC TV
processor. The circuit has been designed for use with the
baseband chrominance delay line TDA4665 and for
DC-coupled vertical and East-West (EW) output stages.
The device can process both CVBS and Y/C input signals
and has a linear RGB-input with fast blanking.
The peaking circuit generates asymmetrical overshoots
(the amplitude of the ‘black’ overshoots is approximately
2 times higher as the one of the ‘white’ overshoots) and
contains a (defeatable) coring function.
The RGB control circuit contains a black-current stabilizer
circuit with internal clamp capacitors. The white point of the
picture tube is adjusted via the I2C-bus.
The deflection control circuit provides a drive pulse for the
horizontal output stage, a differential sawtooth current for
the vertical output stage and an East-West drive current for
the East-West output stage.These signals can be
manipulated for geometry correction of the picture.
The supply voltage for the IC is 8 V. The IC is available in
an SDIP package with 52 pins and in a QFP package with
64 pins (see Chapter “Ordering information”).
The pin numbers indicated in this document are
referenced to the SDIP52; SOT247-1 package; unless
The supply is based on MOTOROLA MC44603p which is a MIXED FREQUENCY MODE GREENLINE PWM CONTROLLER:Fixed Frequency, Variable Frequency,
The MC44603 is an enhanced high performance controller that is
specifically designed for off–line and dc–to–dc converter applications. This
device has the unique ability of automatically changing operating modes if
the converter output is overloaded, unloaded, or shorted, offering the
designer additional protection for increased system reliability. The MC44603
has several distinguishing features when compared to conventional SMPS
controllers. These features consist of a foldback facility for overload
protection, a standby mode when the converter output is slightly loaded, a
demagnetization detection for reduced switching stresses on transistor and
diodes, and a high current totem pole output ideally suited for driving a power
MOSFET. It can also be used for driving a bipolar transistor in low power
converters (< 150 W). It is optimized to operate in discontinuous mode but
can also operate in continuous mode. Its advanced design allows use in
current mode or voltage mode control applications.
Current or Voltage Mode Controller
• Operation up to 250 kHz Output Switching Frequency
• Inherent Feed Forward Compensation
• Latching PWM for Cycle–by–Cycle Current Limiting
• Oscillator with Precise Frequency Control
• Externally Programmable Reference Current
• Secondary or Primary Sensing
• Synchronization Facility
• High Current Totem Pole Output
• Undervoltage Lockout with Hysteresis
• Overvoltage Protection Against Open Current and Open Voltage Loop
• Protection Against Short Circuit on Oscillator Pin
• Fully Programmable Foldback
• Soft–Start Feature
• Accurate Maximum Duty Cycle Setting
• Demagnetization (Zero Current Detection) Protection
• Internally Trimmed Reference
GreenLine Controller: Low Power Consumption in Standby Mode
• Low Startup and Operating Current
• Fully Programmable Standby Mode
• Controlled Frequency Reduction in Standby Mode
• Low dV/dT for Low EMI Radiation.