visaton electrical components Germany visaton model visaton price

visaton electrical components are a new type of contactless switching device composed entirely of solid-state electronic components. It utilizes the switching characteristics of electronic components (such as switching transistors, triacs, and other semiconductor devices) to achieve contactless, spark-free circuit connection and disconnection, hence it is also known as a "contactless switch." A solid-state relay is a four-terminal active device, where two terminals are input control terminals and the other two are output controlled terminals. It has both amplification drive function and isolation function, making it very suitable for driving high-power switching actuators. Compared to electromagnetic relays, it offers higher reliability, is contactless, has a long service life, fast speed, and low external interference, and has been widely used [1].

visaton electrical components applications

The structure and characteristics of Schottky diodes make them suitable for high-frequency rectification in low-voltage, high-current output applications. They are used for detection and mixing at very high frequencies (such as X band, C band, S band, and Ku band) and as clamps in high-speed logic circuits. In addition to the characteristic parameters of ordinary PN junction diodes, the electrical parameters of Schottky diodes used for detection and mixing include intermediate frequency impedance, voltage standing wave ratio, and noise figure. Schottky barrier diodes are a type of low-power, ultra-high-speed semiconductor device. The most significant feature is the extremely short reverse recovery time (which can be as low as a few nanoseconds). They are mostly used as high-frequency, low-voltage, high-current rectifier diodes, freewheeling diodes, and protection diodes. They are also used as rectifier diodes and small-signal detector diodes in circuits such as microwave communications. They are relatively common in communication power supplies, variable frequency drives, etc. A typical application is in the switching circuit of a bipolar junction transistor BJT, where a Shockley diode is connected to BJT for clamping, so that the transistor is actually close to the cutoff state when in the conduction state, thereby improving the switching speed of the transistor. The main feature of Schottky diodes is the smaller forward voltage drop. Under the same current conditions, its forward voltage drop is much smaller. Additionally, its recovery time is short. It also has some disadvantages: lower voltage resistance and slightly larger leakage current. Comprehensive consideration is required during selection.

visaton electrical components principle

When the voltage applied to the varistor is below its threshold, the current flowing through it is extremely small, equivalent to a resistor with infinite resistance. That is to say, when the voltage applied to it is below its threshold, it acts as a switch in the open state. When the voltage applied to the varistor exceeds its threshold, the current flowing through it surges, equivalent to a resistor with infinitesimal resistance. That is to say, when the voltage applied to it is above its threshold, it acts as a switch in the closed state. Protection principle of surge absorbers: In the standby state, the varistor has very high impedance (several megaohms) relative to the protected electronic components and does not affect the characteristics of the original design circuit. However, when an instantaneous surge voltage appears (exceeding the breakdown voltage of the surge absorber), the impedance of the surge absorber drops low (only a few ohms) and causes a short circuit in the line, thereby protecting electronic products or more expensive components.

visaton electrical components characteristics

So-called dynamic characteristics refer to the output characteristics of a sensor when the input changes. In practical work, the dynamic characteristics of sensors are often expressed by their response to certain standard input signals. This is because the sensor's response to standard input signals is easy to obtain through experimental methods, and there is a certain relationship between its response to standard input signals and its response to arbitrary input signals; often, knowing the former allows inference of the latter. The most commonly used standard input signals are step signals and sinusoidal signals, so the dynamic characteristics of sensors are also often expressed by step response and frequency response.

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