FTRONIC electrical components Germany FTRONIC model FTRONIC price

FTRONIC electrical components are active-matrix liquid crystal displays driven by thin-film transistors. They primarily use current to stimulate liquid crystal molecules to generate points, lines, and planes, which combine with backlights to form images. IPS, TFT, and SLCD are all subclasses of LCD. Their working principle is that, under the action of an electric field, the alignment direction of liquid crystal molecules changes, altering the transmittance of external light sources (modulation) to achieve electro-optical conversion. Then, using different excitations of the R, G, and B primary color signals through red, green, and blue primary color filters, color reproduction in the time and space domains is completed.

FTRONIC electrical component advantages

Components do not consume material. No matter how excellent a vacuum tube is, it will gradually deteriorate due to changes in cathode atoms and slow air leakage. Due to technical reasons, transistors had similar problems at the beginning of their manufacture. Power consumption is extremely low, only one-tenth or even one-hundredth of that of vacuum tubes. Unlike vacuum tubes, they do not require heating filaments to produce free electrons. A transistor radio can operate for six months to a year on just a few dry cells, which is difficult to achieve with vacuum tube radios. No preheating is required; it works as soon as it is turned on. For example, a transistor radio produces sound immediately upon switching on, and a transistor TV displays an image quickly. Vacuum tube equipment cannot achieve this. After switching on, one must wait a while before hearing sound or seeing an image. Obviously, transistors have significant advantages in military, measurement, and recording applications. They are robust and reliable, resistant to shock and vibration, which vacuum tubes cannot match. Additionally, the volume of a transistor is only one-tenth to one-hundredth that of a vacuum 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.

FTRONIC electrical component characteristics

Common types include RC phase-shifting bridge trigger circuits, unijunction transistor trigger circuits, bipolar junction transistor trigger circuits, and trigger circuits that use small thyristors to trigger large thyristors, among others. The main parameters of thyristors are: 1, rated on-state average current IT: the average value of the 50 Hz sinusoidal half-wave current that can continuously pass between the anode and cathode under certain conditions. 2, forward blocking peak voltage VPF: the forward peak voltage that can be repeatedly applied across the thyristor when the gate is open without a trigger signal and the anode forward voltage has not exceeded the turn-on voltage. The forward peak voltage withstandable by the thyristor must not exceed this parameter value given in the manual. 3, reverse blocking peak voltage VPR: the reverse peak voltage that can be repeatedly applied across the thyristor when reverse voltage is applied and the thyristor is in the reverse blocking state. During use, this parameter value given in the manual must not be exceeded. 4, trigger voltage VGT: the minimum gate current and voltage required to switch the thyristor from the off state to the on state when a certain voltage is applied between the anode and cathode at a specified ambient temperature. 7, holding current IH: the minimum anode forward current required to maintain the thyristor in the conducting state at a specified temperature with the gate circuit open. Many new types of thyristor components have been introduced, such as fast thyristors suitable for high-frequency applications, bidirectional thyristors that can be controlled to conduct in both directions by positive or negative trigger signals, and thyristors that can be turned on by a positive trigger signal and turned off by a negative trigger signal.

FTRONIC electrical component parameters

(1) Nominal capacitance is the capacitance marked on the capacitor. However, there is a deviation between the actual capacitance and the nominal capacitance; the accuracy class corresponds to the allowable error. General capacitors commonly use classes I, II, and III, while electrolytic capacitors use classes IV, V, and VI to indicate capacitance accuracy, selected according to the application. The capacitance value of an electrolytic capacitor depends on the impedance presented during operation under AC voltage. The capacitance value changes with operating frequency, temperature, voltage, and measurement method. The unit of capacitance is F (farad). Since a capacitor is a "container" for storing charge, the issue of "capacity" size arises. To measure the ability of a capacitor to store charge, the physical quantity of capacitance is defined. A capacitor can only store charge under the action of an applied voltage. Different capacitors may store different amounts of charge under voltage. Internationally, it is uniformly stipulated that when a DC voltage of 1 volts is applied to a capacitor, the amount of charge it can store is its capacitance (i.e., charge per unit voltage), represented by the letter C. The basic unit of capacitance is the farad (F). (2) Rated voltage is the maximum DC voltage that can be continuously applied to the capacitor at the minimum and rated ambient temperatures. If the operating voltage exceeds the voltage resistance of the capacitor, the capacitor will break down and be damaged. In practice, as the temperature rises, the voltage resistance value will decrease. (3) Insulation resistance. When DC voltage is applied to a capacitor, a leakage current is generated; the ratio of the two is called insulation resistance. When the capacitance is small, its value mainly depends on the surface condition of the capacitor. Generally, the higher the insulation resistance, the better. (4) Loss. The energy consumed by heat generation per unit time under the action of an electric field is called loss. Loss is related to frequency range, dielectric material, conductivity, and the resistance of the metal parts of the capacitor. (7) Frequency characteristics. As frequency increases, the capacitance of general capacitors tends to decrease. When a capacitor operates below its resonant frequency, it behaves capacitively; when it exceeds its resonant frequency, it behaves inductively, meaning it is no longer a capacitor but an inductor. Therefore, it is essential to avoid operating capacitors above their resonant frequency.

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