Replace capacitor factory renovation manufacturers

13925508852 Wu-sheng electronic products, the capacitor is essential for electronic devices, it acts as a smoothing filter rectifier, power supply decoupling in an electronic device, bypassing the AC signal, AC and DC circuit AC coupling. Because of the type of capacitor type and structure are more, so we not only need to understand the performance indicators of various types of capacitors and general characteristics, but also must understand the advantages and disadvantages in the given purpose under various elements, and mechanical or environmental constraints, etc. . Here will be the main parameters of capacitor and its application to do a simple explanation. 1. Nominal capacitance (C R). Capacitors marked capacitance value. Lower capacity electric capacitors mica and ceramic media (approximately 5000pF or less); paper, plastic, and some form of capacitor dielectric ceramic center (about 0.005uF ~ 1.0uF); usually larger capacity electrolytic capacitor. This is a rough taxonomy. 2. Category temperature range. Capacitor design determined by continuous working temperature range. The range depends on its temperature limit corresponding category, such as the upper category temperature, the lower category temperature, rated temperature (continuous rated voltage maximum ambient temperature) and the like. 3. Rated voltage (U R). At any temperature lower category temperature and the rated temperature between continuously applied to the capacitor rms or peak pulse voltage maximum DC voltage or maximum AC voltage. Capacitors used in high voltage field and, we must pay attention to the impact of corona. Corona is due to the gap between the dielectric / electrode layer is generated, which can generate spurious signals in addition to damage to the equipment, it will also cause the capacitor dielectric breakdown. Under conditions of AC or pulsating corona especially vulnerable. For all the capacitors in use should ensure that the DC voltage and peak AC voltage must not exceed the rated voltage of the capacitor. The loss tangent (tg δ). At a predetermined frequency sinusoidal voltage capacitor power loss divided by the capacitor reactive power loss tangent. In practical applications, the capacitor is not a pure capacitance, as well as an equivalent internal resistance, it is shown a simplified equivalent circuit as illustrated. For electronic equipment, the requirement RS smaller the better, that requires little power loss, the angle between the capacitance of the power of small. 5. The temperature characteristics of the capacitor. Usually 20 ℃ temperature reference capacitance indicates the percentage of the temperature related capacitance. 6. life. Life of the capacitor decreases with increasing temperature. The main reason is the medium temperature to accelerate the chemical reaction for degradation over time. 7. The insulation resistance. Since the temperature increase caused by electrical activity, so that the temperature rise will reduce the insulation resistance. High quality operating philosophy: to allow users to spend the least money, buy the most affordable products. Quality assurance! Advanced technology! Reasonable prices, attentive service! Where to buy our products within a one year package returned, within three years of free maintenance and lifetime maintenance.