CAMTEC electrical components Germany CAMTEC model CAMTEC price

CAMTEC electrical components refer to lightning arrestor tubes or antenna switch tubes used for overvoltage protection, which contain two or more electrodes and are filled with a certain amount of inert gas. A gas discharge tube is a gap-type lightning protection component used for lightning protection in communication systems. Gas discharge tubes are gap-type lightning protection components that have been widely applied in the lightning protection of communication systems. Discharge tubes are commonly used in the first or first two stages of multi-stage protection circuits to discharge instantaneous lightning overcurrents and limit overvoltages. Due to the very high inter-electrode insulation resistance and very small parasitic capacitance of the discharge tube, it has clear advantages for lightning protection of high-frequency signal lines. The main disadvantages of the discharge tube's protection characteristics are its large discharge delay and less-than-ideal operating sensitivity, making it difficult to effectively suppress lightning waves with a steep wavefront rise rate, and there is a follow-current issue in the lightning protection of power systems. Commonly used gas discharge tubes include two-electrode and three-electrode discharge tubes; their encapsulation housing material is mostly ceramic, hence they are called ceramic discharge tubes.

CAMTEC electrical component classification

For different application scenarios, the purpose of applying varistors and the voltage/current stress acting on the varistor are not the same, so the requirements for varistors also differ. Paying attention to these differences is very important for correct usage. According to different purposes, varistors can be divided into two categories: protective varistors and circuit-functional varistors. ① Protective varistors: 1, distinguish between varistors for power supply protection and those for signal line or data line protection, as they must meet the requirements of different technical standards. 2, according to the different continuous operating voltages applied to the varistor, varistors across power lines can be divided into AC type and DC type; varistors exhibit different aging characteristics under these two voltage stresses. 5, according to the different abnormal overvoltage characteristics withstandable by the varistor, varistors can be divided into three types: surge suppression type, high-power type, and high-energy type. ② Surge suppression type: refers to varistors used to suppress transient overvoltages such as lightning overvoltages and switching overvoltages. The occurrence of such transient overvoltages is random and non-periodic, and the peak current and voltage may be very high. The vast majority of varistors belong to this category. ③ High-power type: refers to varistors used to absorb continuous pulse groups that appear periodically, such as varistors connected in parallel to switched-mode power supply converters. Here, impulse voltages appear periodically, the period is known, and the energy value can generally be calculated. Although the voltage peak is not large, the average power is quite high due to the high frequency of occurrence. ④ High-energy type: refers to varistors used to absorb magnetic energy in large inductive coils such as generator excitation coils and lifting electromagnet coils. For such applications, the main technical indicator is energy absorption capacity. The protective function of varistors can be repeated many times in most application scenarios, but sometimes they are made into one-time protective devices like current fuses. For example, varistors with short-circuit contacts connected in parallel to the loads of certain current transformers.

CAMTEC electrical component advantages

Components do not consume material; no matter how excellent an electron tube is, it will gradually deteriorate due to changes in cathode atoms and chronic gas leakage. For technical reasons, transistors had the same problem at the beginning of their manufacture. They consume very little electrical energy, only one-tenth to one-several-tenths of that of electron tubes. Unlike electron tubes, they do not require heating filaments to generate free electrons. A transistor radio can operate for half a year to a year on just a few dry cells, which is difficult to achieve with electron tube radios. No preheating is required; they work immediately upon startup. For example, a transistor radio produces sound as soon as it is turned on, and a transistor TV displays images quickly after being turned on. Electron tube equipment cannot achieve this. After turning on an electron tube device, one must wait a while before hearing sound or seeing images. Obviously, transistors have significant advantages in military, measurement, recording, and other aspects. They are robust and reliable, resistant to shock and vibration, which electron tubes cannot match. In addition, the volume of a transistor is only one-tenth to one-hundredth of that of an electron tube, and it generates very little heat, making it suitable for designing small, complex, and reliable circuits. Although the manufacturing process of transistors is precise, the steps are simple, which helps increase the installation density of components.

CAMTEC electrical component classification

For different application scenarios, the purpose of applying varistors and the voltage/current stress acting on the varistor are not the same, so the requirements for varistors also differ. Paying attention to these differences is very important for correct usage. According to different purposes, varistors can be divided into two categories: protective varistors and circuit-functional varistors. ① Protective varistors: 1, distinguish between varistors for power supply protection and those for signal line or data line protection, as they must meet the requirements of different technical standards. 2, according to the different continuous operating voltages applied to the varistor, varistors across power lines can be divided into AC type and DC type; varistors exhibit different aging characteristics under these two voltage stresses. 3, according to the different abnormal overvoltage characteristics withstandable by the varistor, varistors can be divided into three types: surge suppression type, high-power type, and high-energy type. ② Surge suppression type: refers to varistors used to suppress transient overvoltages such as lightning overvoltages and switching overvoltages. The occurrence of such transient overvoltages is random and non-periodic, and the peak current and voltage may be very high. The vast majority of varistors belong to this category. ③ High-power type: refers to varistors used to absorb continuous pulse groups that appear periodically, such as varistors connected in parallel to switched-mode power supply converters. Here, impulse voltages appear periodically, the period is known, and the energy value can generally be calculated. Although the voltage peak is not large, the average power is quite high due to the high frequency of occurrence. ④ High-energy type: refers to varistors used to absorb magnetic energy in large inductive coils such as generator excitation coils and lifting electromagnet coils. For such applications, the main technical indicator is energy absorption capacity. The protective function of varistors can be repeated many times in most application scenarios, but sometimes they are made into one-time protective devices like current fuses. For example, varistors with short-circuit contacts connected in parallel to the loads of certain current transformers.

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