The PHILIPS 26C668 color television Has 26 inches color screen and was first set using the PHILIPS K12 CHASSIS combined with the A66-510X CRT TUBE 20AX SYSTEM. The PHILIPS 20AX system was introduced in Europe in 1975 as the first self converging picture tube/deflection coil, combination for 110° degree deflection and screen sizes up to 26". The system is based on the automatic convergence principle discovered by Haantjes and Lubben of Philips Research Laboratory more than 20 years ago. It makes use of an in-line gun array in conjunction with a specially designed saddle type deflection coil. Residual small tolerance errors are compensated by a simple dynamic four-pole system. The tube is 2 cm shorter than conventional 110° Degree tubes and has a standard 36.5 mm neck in order to obtain good color selection. A slotted mask is used in combination with a stripe-structure screen. Picture sharpness is ensured by an astigmatic electron gun
The set has 26 inches color screen and 16 programs preselection with a sure unusual program change and selection.
To select the desired programs you have to select his coordinates on the front keyboard or even the same on the ultrasonic remote .
I.E. to select program number 6 you have to press first the "B" letter then the "2" button to get program 6 which will be showed as B - 2.The tellye here shown has the rare at the time OSD Feature which consist in a very basic Level bars graphic show visualizing the levels for volume, bright and color during setting up via recalling them through remote or front buttons.
These graphic bars are even shown during search tuning showing the advance of the search which is manual but electronically servo assisted by a highly sophisticated system which was even showing via a led lamp isf the tuning have had a drift, to help the fine tuning.
The PHILIPS 26C668 CARAVAGGIO (PHILIPS K12) with the featured CHASSIS PHILIPS K12 incorporates first time an invention which relates to a novel automatic gray scale control circuit for a color television receiver. The circuit senses the cut-off voltage of each gun during the blanking interval, and uses a voltage equal to the cut-off voltage to energize the driver and bias the gun during the video field. The effect is to standardize the emission of each of the three guns against variation in gun cut-off voltage and to produce improved gray scale accuracy at the lowest emission levels. Since the gray scale adjustment is optimized at the lowest emission levels, where the eye is most intolerant to error in hue, one may avoid the need for manual adjustment of the cut-off point, and in cases where the gain does not vary widely from gun to gun, avoid the need for separate gain adjustment. Thus, the circuit may be used either to simplify or eliminate the color set up process at the factory when the receiver is manufactured. It may also reduce or avoid the need for readjustment after periods of use.The emission characteristics of the electron guns of a color kinescope in a television receiver are subject to varying as a function of temperature and aging, among other factors. When such variations affect the gain related transconductance of one or more electron guns, the affected electron guns conduct improper white level currents in response to a white level video drive signal. Thus a non-white color image is produced in response to a white video signal, and the overall color fidelity of a reproduced image is impaired.
As example some color television receivers include systems for automatically compensating for variations of the electron gun emission characteristics which relate to the gains of the electron guns. Such automatic control systems are desirable because they continuously maintain the proper gain characteristic of the electron guns, and because they eliminate the need for time consuming manual kinescope gain adjustments during the receiver manufacturing process and afterwards as the kinescope ages. Such automatic kinescope level control systems, also known as "white grey balance" systems, often operate by applying a white reference signal to preceding video signal processing circuits during intervals when video information signals are absent. The resulting kinescope electron gun current is then sensed and compared with a reference signal representative of a corresponding correct kinescope white current level. As a result of this comparison, a control signal indicating the amount by which the electron gun white current level differs from the correct level is generated and used to adjust the signal gain of an associated amplifier in the video signal path until the correct electron gun white current level is produced.
The PHILIPS 26C668 CARAVAGGIO (PHILIPS K12) is a television receiver whose tuning is electronically controlled, and has a number of operating advantages. These include, among others, a greater degree of automation and speed in the selection of channels and less noise when changing channels even if it's indeed performed all manually. However, where the only means possible for channel selection is a single electronic tuning system, a failure in its operation may prevent any reception.
One partial solution to the problem is to provide two electronic tuning systems, one for UHF (ultra high frequency) and the other for VHF (very high frequency), which are independent of each other. This makes it possible, in the event of failure of one of these systems, to continue to receive signals on the other system. However, in the system of the present application, for reasons not necessary to discuss here, has a double tuner units . Moreover, these two separate electronic systems would substantially increase the price of the receiver like this here above pictured television receiver circuits and is particularly concerned with automatic fine tuning, or automatic frequency control arrangements in such circuits. More specifically still, the present invention concerns an automatic fine tuning arrangement for television receiver circuit arranged for both very high frequency (VHF), and ultra high frequency (UHF) reception.
The PHILIPS 26C668 CARAVAGGIO (PHILIPS K12) Television receiver has circuits having automatic fine tuning arrangements manually adjustable.
Such fine tuning circuits employ a known frequency discriminator circuit which provides an output which is employed to regulate conditions in the oscillator circuit to adjust improper conditions of frequency. Somewhat more specifically, a television circuit will embody an oscillator, referred to as a local oscillator, which supplies a frequency differing from the frequency of a received signal by a specific predetermined amount, referred to as the intermediate frequency. When the frequency of the oscillator and the frequency of the signal are brought together in separate coils in a transformer arrangement, with the aid of a nonlinear device, such as a diode, the two frequencies produce a beat frequency at the said predetermined intermediate frequency.
From the point where the incoming signal is beat down to the intermediate frequency, the entire circuitry is designed specifically for the intermediate frequency and any variation therefrom will result in faulty reproduction of one or both of the picture and the sound. It is thus highly important that the intermediate frequency be exactly that for which the major portion of the circuit of the television receiver is designed.
The problem of the frequency of the local oscillator in the receiving set drifting, or of the set being improperly tuned is taken care of in the manner generally referred to above, namely, by adjusting the local oscillator in the set in conformity with the signal derived from a frequency discriminator circuit which is supplied at its input side with the aforementioned intermediate frequency.
The frequency discriminator is so designed, according to known practices that, at the desired intermediate frequency for which the circuit of the television receiver is designed, there is zero voltage output at the output side of the frequency discriminator circuit therfore the red led is OFF. When the intermediate frequency at the input side of the frequency discriminator circuit varies in one direction from that desired, the voltage at the output of the frequency discriminator rises and, when the said input frequency varies in the other direction, the voltage at the output of the frequency discriminator circuit varies in the opposite direction and the red led is ON. For a limited range of frequency variations, the output voltage of the frequency discriminator circuit varies substantially linearly through zero and at an incline determined by the parameters of the particular circuit employed.
The set is build with a Modular chassis design because as modern television receivers become more complex the problem of repairing the receiver becomes more difficult. As the number of components used in the television receiver increases the susceptibility to breakdown increases and it becomes more difficult to replace defective components as they are more closely spaced. The problem has become even more complicated with the increasing number of color television receivers in use. A color television receiver has a larger number of circuits of a higher degree of complexity than the black and white receiver and further a more highly trained serviceman is required to properly service the color television receiver.
Fortunately for the service problem to date, most failures occur in the vacuum tubes used in the television receivers. A faulty or inoperative vacuum tube is relatively easy to find and replace. However, where the television receiver malfunction is caused by the failure of other components, such as resistors, capacitors or inductors, it is harder to isolate the defective component and a higher degree of skill on the part of the serviceman is required.
Even with the great majority of the color television receiver malfunctions being of the "easy to find and repair" type proper servicing of color sets has been difficult to obtain due to the shortage of trained serviceman.
At the present time advances in the state of the semiconductor art have led to the increasing use of transistors in color television receivers. The receiver described in this application has only two tubes, the picture tube and the high voltage rectifier tube, all the other active components in the receiver being semiconductors.
One important characteristic of a semiconductor device is its extreme reliability in comparison with the vacuum tube. The number of transistor and integrated circuit failures in the television receiver will be very low in comparison with the failures of other components, the reverse of what is true in present day color television receivers. Thus most failures in future television receivers will be of the hard to service type and will require more highly qualified servicemen.
The primary symptoms of a television receiver malfunction are shown on the picture tube of the television receiver while the components causing the malfunction are located within the cabinet. Also many adjustments to the receiver require the serviceman to observe the screen. Thus the serviceman must use unsatisfactory mirror arrangements to remove the electronic chassis from the cabinet, usually a very difficult task. Further many components are "buried" in a maze of circuitry and other components so that they are difficult to remove and replace without damage to other components in the receiver.
Repairing a modern color television receiver often requires that the receiver be removed from the home and carried to a repair shop where it may remain for many weeks. This is an expensive undertaking since most receivers are bulky and heavy enough to require at least two persons to carry them. Further, two trips must be made to the home, one to pick up the receiver and one to deliver it. For these reasons, the cost of maintaining the color television receiver in operating condition often exceeds the initial cost of the receiver and is an important factor in determining whether a receiver will be purchased.
Therefore, the object of this invention is to provide a transistorized color television receiver in which the main electronic chassis is easily accessible for maintenance and adjustment. Another object of this invention is to provide a transistorized color television receiver in which the electronic circuits are divided into a plurality of modules with the modules easily removable for service and maintenance. The main electronic chassis is slidably mounted within the cabinet so that it may be withdrawn, in the same manner as a drawer, to expose the electronic circuitry therein for maintenance and adjustment from the rear closure panel after easy removal. Another aspect is the capability to be serviced at eventually the home of the owner.
This is the last PHILIPS model series using the ultrasound ac carrier for remote control commands.
The set here shown has an hour count of use near or even above 70000 HOURS with all original components and original tube ! Pictures are perfect and bright immediately after power up !
This PHILIPS Model WAS even rebranded PHONOLA which was aquired years before.
Koninklijke Philips Electronics N.V. (Royal Philips Electronics Inc.), most commonly known as Philips, (Euronext: PHIA, NYSE: PHG) is a multinational Dutch electronics corporation.
Philips is one of the largest electronics companies in the world. In 2009, its sales were €23.18 billion. The company employs 115,924 people in more than 60 countries.
Philips is organized in a number of sectors: Philips Consumer Lifestyles (formerly Philips Consumer Electronics and Philips Domestic Appliances and Personal Care), Philips Lighting and Philips Healthcare (formerly Philips Medical Systems).
The company was founded in 1891 by Gerard Philips, a maternal cousin of Karl Marx, in Eindhoven, Netherlands. Its first products were light bulbs and other electro-technical equipment. Its first factory survives as a museum devoted to light sculpture. In the 1920s, the company started to manufacture other products, such as vacuum tubes (also known worldwide as 'valves'), In 1927 they acquired the British electronic valve manufacturers Mullard and in 1932 the German tube manufacturer Valvo, both of which became subsidiaries. In 1939 they introduced their electric razor, the Philishave (marketed in the USA using the Norelco brand name).
Philips was also instrumental in the revival of the Stirling engine.
As a chip maker, Philips Semiconductors was among the Worldwide Top 20 Semiconductor Sales Leaders.
In December 2005 Philips announced its intention to make the Semiconductor Division into a separate legal entity. This process of "disentanglement" was completed on 1 October 2006.
On 2 August 2006, Philips completed an agreement to sell a controlling 80.1% stake in Philips Semiconductors to a consortium of private equity investors consisting of Kohlberg Kravis Roberts & Co. (KKR), Silver Lake Partners and AlpInvest Partners. The sale completed a process, which began December 2005, with its decision to create a separate legal entity for Semiconductors and to pursue all strategic options. Six weeks before, ahead of its online dialogue, through a letter to 8,000 of Philips managers, it was announced that they were speeding up the transformation of Semiconductors into a stand-alone entity with majority ownership by a third party. It was stated then that "this is much more than just a transaction: it is probably the most significant milestone on a long journey of change for Philips and the beginning of a new chapter for everyone – especially those involved with Semiconductors".
In its more than 115 year history, this counts as a big step that is definitely changing the profile of the company. Philips was one of few companies that successfully made the transition from the electrical world of the 19th century into the electronic age, starting its semiconductor activity in 1953 and building it into a global top 10 player in its industry. As such, Semiconductors was at the heart of many innovations in Philips over the past 50 years.
Agreeing to start a process that would ultimately lead to the decision to sell the Semiconductor Division therefore was one of the toughest decisions that the Board of Management ever had to make.
On 21 August 2006, Bain Capital and Apax Partners announced that they had signed definitive commitments to join the expanded consortium headed by KKR that is to acquire the controlling stake in the Semiconductors Division.
On 1 September 2006, it was announced in Berlin that the name of the new semiconductor company founded by Philips is NXP Semiconductors.
Coinciding with the sale of the Semiconductor Division, Philips also announced that they would drop the word 'Electronics' from the company name, thus becoming simply Koninklijke Philips N.V. (Royal Philips N.V.).
In the early years of Philips &; Co., the representation of the company name took many forms: one was an emblem formed by the initial letters of Philips ; Co., and another was the word Philips printed on the glass of metal filament lamps.
One of the very first campaigns was launched in 1898 when Anton Philips used a range of postcards showing the Dutch national costumes as marketing tools. Each letter of the word Philips was printed in a row of light bulbs as at the top of every card. In the late 1920s, the Philips name began to take on the form that we recognize today.
The now familiar Philips waves and stars first appeared in 1926 on the packaging of miniwatt radio valves, as well as on the Philigraph, an early sound recording device. The waves symbolized radio waves, while the stars represented the ether of the evening sky through which the radio waves would travel.
In 1930 it was the first time that the four stars flanking the three waves were placed together in a circle. After that, the stars and waves started appearing on radios and gramophones, featuring this circle as part of their design. Gradually the use of the circle emblem was then extended to advertising materials and other products.
At this time Philips’ business activities were expanding rapidly and the company wanted to find a trademark that would uniquely represent Philips, but one that would also avoid legal problems with the owners of other well-known circular emblems. This wish resulted in the combination of the Philips circle and the wordmark within the shield emblem.
In 1938, the Philips shield made its first appearance. Although modified over the years, the basic design has remained constant ever since and, together with the wordmark, gives Philips the distinctive identity that is still embraced today.
The first steps of CRT production by Philips started in the thirties with the Deutsche Philips Electro-Spezial gesellschaft in Germany and the Philips NatLab (Physics laboratory) in Holland. After the introduction of television in Europe, just after WWII there was a growing demand of television sets and oscilloscope equipment. Philips in Holland was ambitious and started experimental television in 1948. Philips wanted to be the biggest on this market. From 1948 there was a small Philips production of television and oscilloscope tubes in the town of Eindhoven which soon developed in mass production. In 1976 a part of the Philips CRT production went to the town of Heerlen and produced its 500.000'th tube in 1986. In 1994 the company in Heerlen changed from Philips into CRT-Heerlen B.V. specialized in the production of small monochrome CRT's for the professional market and reached 1.000.000 produced tubes in 1996. In this stage the company was able to produce very complicated tubes like storage CRT's.
In 2001 the company merged into Professional Display Systems, PDS worked on LCD and Plasma technology but went bankrupt in 2009. The employees managed a start through as Cathode Ray Technology which now in 2012 has to close it's doors due to the lack of sales in a stressed market. Their main production was small CRT's for oscilloscope, radar and large medical use (X-ray displays). New experimental developments were small Electron Microscopy, 3D-TV displays, X-Ray purposes and Cathode Ray Lithography for wafer production. Unfortunately the time gap to develop these new products was too big.
28 of September 2012, Cathode Ray Technology (the Netherlands), the last Cathode Ray Tube factory in Europe closed. Ironically the company never experienced so much publicity as now, all of the media brought the news in Holland about the closure. In fact this means the end of mass production 115 years after Ferdinand Braun his invention. The rapid introduction and acceptation of LCD and Plasma displays was responsible for a drastic decrease in sales. Despite the replacement market for the next couple of years in the industrial, medical and avionics sector.
The numbers are small and the last few CRT producers worldwide are in heavy competition.
Gerard Leonard Frederik Philips (October 9, 1858, in Zaltbommel – January 27, 1942, in The Hague, Netherlands) was a Dutch industrialist, co-founder (with his father Frederik Philips) of the Philips Company as a family business in 1891. Gerard and his younger brother Anton Philips changed the business to a corporation by founding in 1912 the NV Philips' Gloeilampenfabrieken. As the first CEO of the Philips corporation, Gerard laid with Anton the base for the later Philips multinational.
Early life and education
Gerard was the first son of Benjamin Frederik David Philips (1 December 1830 – 12 June 1900) and Maria Heyligers (1836 – 1921). His father was active in the tobacco business and a banker at Zaltbommel in the Netherlands; he was a first cousin of Karl Marx.
Gerard Philips became interested in electronics and engineering. Frederik was the financier for Gerard's purchase of the old factory building in Eindhoven where he established the first factory in 1891. They operated the Philips Company as a family business for more than a decade.
Marriage and family
On March 19, 1896 Philips married Johanna van der Willigen (30 September 1862 – 1942). They had no children.
Gerard was an uncle of Frits Philips, whom he and his brother brought into the business. Later they brought in his brother's grandson, Franz Otten.
Gerard and his brother Anton supported education and social programs in Eindhoven, including the Philips Sport Vereniging (Philips Sports Association), which they founded. From it the professional football (soccer) department developed into the independent Philips Sport Vereniging N.V.
Anton Frederik Philips (March 14, 1874, Zaltbommel, Gelderland – October 7, 1951, Eindhoven) co-founded Royal Philips Electronics N.V. in 1912 with his older brother Gerard Philips in Eindhoven, the Netherlands. He served as CEO of the company from 1922 to 1939.
Early life and education
Anton was born to Maria Heyligers (1836 – 1921) and Benjamin Frederik David Philips (December 1, 1830 – June 12, 1900). His father was active in the tobacco business and a banker at Zaltbommel in the Netherlands. (He was a first cousin to Karl Marx.) Anton's brother Gerard was 16 years older.
In May 1891 the father Frederik was the financier and, with his son Gerard Philips, co-founder of the Philips Company as a family business. In 1912 Anton joined the firm, which they named Royal Philips Electronics N.V.
During World War I, Anton Philips managed to increase sales by taking advantage of a boycott of German goods in several countries. He provided the markets with alternative products.
Anton (and his brother Gerard) are remembered as being civic-minded. In Eindhoven they supported education and social programs and facilities, such as the soccer department of the Philips Sports Association as the best-known example.
Anton Philips brought his son Frits Philips and grandson Franz Otten into the company in their times. Anton took the young Franz Otten with him and other family members to escape the Netherlands just before the Nazi Occupation during World War II; they went to the United States. They returned after the war.
His son Frits Philips chose to stay and manage the company during the occupation; he survived several months at the concentration camp of Vught after his workers went on strike. He saved the lives of 382 Jews by claiming them as indispensable to his factory, and thus helped them evade Nazi roundups and deportation to concentration camps.
Philips died in Eindhoven in 1951.
Marriage and family
Philips married Anne Henriëtte Elisabeth Maria de Jongh (Amersfoort, May 30, 1878 – Eindhoven, March 7, 1970). They had the following children:
* Anna Elisabeth Cornelia Philips (June 19, 1899 – ?), married in 1925 to Pieter Franciscus Sylvester Otten (1895 – 1969), and had:
o Diek Otten
o Franz Otten (b. c. 1928 - d. 1967), manager in the Dutch electronics company Philips
* Frederik Jacques Philips (1905-2005)
* Henriëtte Anna Philips (Eindhoven, October 26, 1906 – ?), married firstly to A. Knappert (d. 1932), without issue; married secondly to G. Jonkheer Sandberg (d. September 5, 1935), without issue; and married thirdly in New York City, New York, on September 29, 1938 to Jonkheer Gerrit van Riemsdijk (Aerdenhout, January 10, 1911 – Eindhoven, November 8, 2005). They had the following children:
o ..., Jonkheerin Gerrit van Riemsdijk (b. Waalre, October 2, 1939), married at Waalre on February 17, 1968 to Johannes Jasper Tuijt (b. Atjeh, Koeta Radja, March 10, 1930), son of Jacobus Tuijt and wife Hedwig Jager, without issue
o ..., Jonkheerin Gerrit van Riemsdijk (b. Waalre, April 3, 1946), married firstly at Calvados, Falaise, on June 6, 1974 to Martinus Jan Petrus Vermooten (Utrecht, September 16, 1939 – Falaise, August 29, 1978), son of Martinus Vermooten and wife Anna Pieternella Hendrika Kwantes, without issue; married secondly in Paris on December 12, 1981 to Jean Yves Louis Bedos (Calvados, Rémy, January 9, 1947 – Calvados, Lisieux, October 5, 1982), son of Georges Charles Bedos and wife Henriette Louise Piel, without issue; and married thirdly at Manche, Sartilly, on September 21, 1985 to Arnaud Evain (b. Ardennes, Sedan, July 7, 1952), son of Jean Claude Evain and wife Flore Halleux, without issue
o ..., Jonkheerin Gerrit van Riemsdijk (b. Waalre, September 4, 1948), married at Waalre, October 28, 1972 to Elie Johan François van Dissel (b. Eindhoven, October 9, 1948), son of Willem Pieter
(To see the Internal Chassis Just click on Older Post Button on bottom page, that's simple !)