With the rapid development of electronic technology, the requirements for electronic components are getting higher and higher. On the one hand, the electrical performance, reliability and stability of electronic components are required to be higher and higher. On the other hand, the size of electronic components is required to be smaller and smaller, the weight is getting lighter and lighter, and the cost is getting lower and lower. To meet these requirements, the materials, processes and structures of electronic components are constantly innovated, and new products are continuously launched to meet the requirements of the whole machine products. Color TVs and monitors are developing towards large screens and high definition, and higher and higher requirements are put forward for capacitors, especially for S correction capacitors, one of the key components in the line scanning circuit. The role of 2S correction capacitors The main function of color TVs is to convert the received electrical information into optical information (image), and the conversion of electrical information as a time function into a flat image is completed by electron beam scanning. The TV uses the principle of \"moving electrons in a circular motion in a uniform magnetic field\" to realize the scanning of the electron beam. Changing the magnetic induction intensity changes the circular radius of the electron motion, thereby changing the deflection angle of the electron beam and realizing the scanning of the electron beam. The function of the scanning circuit is to generate sawtooth current waves in the line deflection and field deflection coils. The line deflection makes the electron beam scan left and right, and the field deflection makes the electron beam scan up and down. Under their joint action, a scanning raster is generated on the fluorescent screen. Assume that the magnetic field of the deflection coil is uniformly distributed and confined to an area with a width of l, the magnetic induction intensity is B, the direction is perpendicular to the paper surface, the acceleration voltage is Va, and the electrons move in a circle after entering the uniform magnetic field along the sub-axis (see Figure 1). The radius of the arc is R, then the following formula is obtained:
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