It has 16 + 16 Programs preselection and VST search tuning functions and remote.
Front din jack for audio recorder is even present toghether with a complete keyboard for all single programs and controls.
The present invention refers to an improved voltage synthesis tuning system with digital memory, in particular for a television transmissions receiver, wherein a plurality of digital codes, each respectively identifying a television channel, are memorised in a digital tuning memory, to a corresponding plurality of addresses, with an automatic tuning circuit, and with means for modifying the respective digital code, in the presence of frequency drift phenomenons, exceeding the pull-in range of such automatic tuning circuit.At the moment of carrying out the tuning, the digital code relative to the desired channel is read from the memory, is converted to an analogous value, and the corresponding voltage to such value is applied to the tuner, that is of the normal type having a controlled voltage oscillator (V.C.O).
These sets were highly reliable and almost lasting for ever.
The new Salora G chassis employs yet another variation on the combined line output stage/power supply theme, called Ipsalo. The operation of this novel circuit, which provides mains isolation and contributes to the very low power consumption of the chassis, is explained.
The 1G CHASSIS technology developed by SALORA was oriented towards low consumption, low energy and high durability and quality ONLY 40 WATTS.
Was the first model series developed around the LOW ENERGY concept with new chassis design and technology based around integrated power supply system.
The front side has a serigraphy on the lid of tuning search box which says "low energy long life" andindeed this telly runs almost cool and has low consumption of energy compared to other models in that era of time.
TV DESIGNERS in recent years have paid a lot of attention to devising various ways of operating the line timebase and the power supply in tandem. After all, if you use a chopper to provide a regulated supply for a transistor line output stage, it's logical to switch the chopper transistor at line frequency. This in fact is a common enough arrangement nowadays. As far back as 1975, Thorn as example went a stage farther by integrating the two stages. Syclops circuit they adopted for the 9000 chassis used a single transistor as the chopper and line output switching device. It drove two transformers, the chopper transformer and the line output transformer like Italian Mivar in the 1980's . At about the same time I've noticed an interesting circuit suggested by Siemens. It was intended for use in large - screen monochrome receivers, and its advantages were the provision of mains isolation and low power consumption.
I've never come across it in use, maybe because mains - isolated monochrome sets are rare birds indeed.
The horizontal deflection circuit for a television receiver is designed without a transformer so that the chassis is not voltage. The mains ac is rectified directly without a transformer and applied to a pump stage. The pump stage is coupled via a line transformer to the line output stage. Whilst the pump stage is connected electrically to the mains supply, the line output stage and the control circuits for the line output stage and for the pump stage are all electrically isolated from the ac mains. This isolation is achieved using three isolation transformers. Horizontal deflection circuits are used in conjunction with television picture tubes in television display devices. Typically, the horizontal deflection circuit includes a magnetic winding associated with the picture tube and a switching circuit by which energy from a direct voltage source is coupled to the winding and to its associated reactances. The switching circuit is synchronized with synchronizing signals associated with the information content of the video to be displayed on the picture tube. In order to avoid distorted images on the displayed raster, the size of the horizontal scanning line and the peak deflection or scanning current must be maintained constant over substantial periods of time. It is desirable to have a regulator scheme adaptable for use with a transistor deflection circuit which provides conductive isolation from the power mains, has no substantial voltage across the regulator switch during the retrace interval, a wide range of regulation, and which is commutated off and therefore has relatively small losses and which requires no independent turn-off circuit, or in which turn-off transients are small if a turn-off circuit is used. A regulated television deflection apparatus adapted to be energized by and isolated from a source of unregulated direct voltage includes a regulator switch having a controlled current path and a control electrode. A transformer has a primary winding serially coupled with the main current path and with the source of direct voltage for coupling energy from the source to the primary winding during those intervals in which the regulator switch is on. The transformer has a secondary winding conductively isolated from the primary winding. A deflection winding is coupled across the secondary winding for forming a path for the bidirectional flow of current therebetween. A trace switch is coupled in parallel with the deflection winding and is operated at the horizontal rate for promoting the flow of deflection current in the deflection winding during recurrent trace and retrace intervals. The voltage across the deflection winding during the retrace interval is coupled to the primary winding for reducing the current in the main current path to zero during the retrace intervals to turn the regulator switch off. A control circuit is coupled to the control electrode for controlling the time during the trace interval at which the regulator switch is turned on for maintaining the voltage or energy level associated with the deflection circuit at a substantially constant amplitude.
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.
History of Salora
History starts beginning 1928 in Salo (Finland), where Messrs Nordell and Koskinen built crystal receivers for the new Finish broadcasting station. Rapidly other radios followed, on battery and in 1930 on home electricity. In 1945, after WO II, the company was renamed SALORA oy. This name was a combination of the town SALO and the product RAdio. "Salora" grew and 15,000 radios were produced yearly by 300 people.
In 1957 Salora started the production of black/white TV-sets and in the beginning of the seventies, 2,000 people were employed and they built 1,000 TV-sets per day. At the end of the fifties they started the production of wireless phones for the army and the railways.
In 1966 the export of televisions to Sweden was starting and at the end of the seventies 60% of the production was destined for export. In 1978 a co-operation was founded with NOKIA – under the name MOBIRA – for the production of mobile phones.
In 1981 monitors for IBM were taken into production as well. Thereafter, in 1982, the mobile phone division was sold to NOKIA and in 1984 NOKIA bought the majority of the SALORA shares. In the same year SALORA started to make TV-sets for a famous Japanese brand for the total European market. In 1992 NOKIA took over SALORA completely.
In February 2006 the brandname SALORA is being secured and from now on Albers Trading B.V. will supply her complete range of products under the name SALORA.