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EVALUATION AND MODELLING OF THE POWER LOSSES IN THE HORIZONTAL DEFLECTION CIRCUIT IN TELEVISIONS - WITH FOCUS ON THE SEMICONDUCTORS
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| Author(s) |
Leo Ostergaard; Uffe B. Jensen |
| Abstract |
This paper presents measurement and modelling results of the power losses in the horizontal deflection circuit in television receivers. By using the available component models in Saberâ„¢ it is shown that the characteristic quasi stationary shapes of the voltages and the currents can be achieved by simulations. The measured distribution of the power losses shows that the power diodes and the BJT are responsible for approximately 22% of the total power loss in the basic deflection circuit. The forward recovery causes the major part of the power loss in the power diode while the power loss in the BIT is mainly caused by the turnoff loss. A discussion of the BJT model and the diode models in Saberâ„¢ is given and the most suitable
models for this application are chosen. From simulations and measurements, it is concluded that the power losses can be predicted by an accuracy of less than 5%. |
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| Filename: | Unnamed file |
| Filesize: | 670.1 KB |
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| Type |
Members Only |
| Date |
Last modified 2016-03-15 by System |
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