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회사 뉴스 | 공통 모드 초크 | 산업 뉴스 | 변신 로봇|RJ45 connectors
선택할 때 필터, 가장 중요한 세 가지 매개 변수는 정격 전류, 정격 전압 및 차단 주파수입니다.
(1) The rated current refers to the working current flowing through the 필터. When the operating current of the power line 필터 exceeds the rated current, it will not only cause the 필터 to overheat, but also cause the low-frequency 필터ing performance of the 필터 to decrease. This is because the inductance in the 필터 will saturate in the case of a large current, which will reduce the actual inductance. Therefore, it is very necessary to leave a certain margin when determining the rated working current of the 필터. Generally, the rated current value of the 필터 should be 1.5 times the actual current value.
(2) Determination of rated voltage. If the wires to be 필터ed will not be impacted by high voltages such as electrostatic discharge, electromagnetic pulse, surge, etc., the working voltage of the circuit is the rated working voltage of the 필터. If this is not the case, for example, the cables dragged outside the equipment will be impacted by high voltage, and this situation needs to be fully considered and sufficient margin is left.
(3) Determination of cut-off frequency. The selection of the cutoff frequency must ensure that the passband of the 필터 covers the bandwidth of the functional signal, ensure the normal operation of the device, and 필터 out unnecessary high-frequency interference to the greatest extent possible. For analog signals, the cutoff frequency is well defined, as long as the cutoff frequency is greater than the bandwidth of the signal. For digital pulse signals, the cutoff frequency can be set to 1/lr, where tr is the rise/fall time of the pulse. If it is a periodic pulse signal, 15 times the pulse repetition frequency can also be taken as the cut-off frequency.
선택할 때 필터, 가장 중요한 세 가지 매개 변수는 정격 전류, 정격 전압 및 차단 주파수입니다.
(1) The rated current refers to the working current flowing through the 필터. When the operating current of the power line 필터 exceeds the rated current, it will not only cause the 필터 to overheat, but also cause the low-frequency 필터ing performance of the 필터 to decrease. This is because the inductance in the 필터 will saturate in the case of a large current, which will reduce the actual inductance. Therefore, it is very necessary to leave a certain margin when determining the rated working current of the 필터. Generally, the rated current value of the 필터 should be 1.5 times the actual current value.
(2) Determination of rated voltage. If the wires to be 필터ed will not be impacted by high voltages such as electrostatic discharge, electromagnetic pulse, surge, etc., the working voltage of the circuit is the rated working voltage of the 필터. If this is not the case, for example, the cables dragged outside the equipment will be impacted by high voltage, and this situation needs to be fully considered and sufficient margin is left.
(3) Determination of cut-off frequency. The selection of the cutoff frequency must ensure that the passband of the 필터 covers the bandwidth of the functional signal, ensure the normal operation of the device, and 필터 out unnecessary high-frequency interference to the greatest extent possible. For analog signals, the cutoff frequency is well defined, as long as the cutoff frequency is greater than the bandwidth of the signal. For digital pulse signals, the cutoff frequency can be set to 1/lr, where tr is the rise/fall time of the pulse. If it is a periodic pulse signal, 15 times the pulse repetition frequency can also be taken as the cut-off frequency.
