Schischek electrical components Germany Schischek model Schischek price

Schischek electrical components are surge absorbers/varistor assemblies. Due to their nonlinear resistance change with voltage, they exhibit symmetry in both directions (positive and negative). They respond to abnormal voltages on the line, absorbing most of the surge/spike energy while suppressing the abnormal voltage to a safe range, thereby improving the safety and stability of the circuit. In the standby state, the surge absorber (varistor) has a very high impedance (several megaohms) relative to the protected electronic components and does not affect the characteristics of the original circuit design. However, when an instantaneous surge voltage occurs (exceeding the breakdown voltage of the surge absorber), the impedance of the surge absorber drops low (to only a few ohms), causing a short circuit in the line, thereby protecting electronic products or more expensive components.

Schischek electrical component principle

The absorption film irradiated by infrared rays is a thin film with low heat capacity and a temperature that rises easily. A cavity structure is located directly below the center of the substrate; this design ensures a temperature difference between the cold junction and the measuring junction. The thermocouple consists of polysilicon and aluminum connected in series. When the temperature at the measuring junction of each thermocouple rises, a thermoelectromotive force Vn is generated between the thermocouples, so the sum of their voltages can be obtained at the output terminal.

Schischek electrical component applications

Light-emitting diodes are widely used in many fields. The following outlines their main applications: (1) Applications in consumer electronics: Light-emitting diodes are generally used as backlight sources for screens or for display and lighting purposes in consumer electronics. From large LCD TVs and computer monitors to media players MP3, MP4, and mobile phone displays, light-emitting diodes are used as screen backlights. (2) Applications in automobiles and heavy machinery: Light-emitting diodes are extensively used in automobiles and heavy machinery. Turn signals, interior lighting, instrument panel lighting, headlights, indicator lights, brake lights, and tail lights in automobiles and heavy mechanical equipment all utilize light-emitting diodes. This is mainly because light-emitting diodes offer fast response times and long service life (the lifespan of light-emitting diodes is generally longer than that of automobiles and heavy machinery). (3) Applications in coal mines: Due to characteristics such as high efficiency, low energy consumption, long lifespan, and high luminous intensity compared to ordinary light-emitting devices, light-emitting diodes are used in miner's lamps and underground lighting equipment. Although not yet fully popularized, they will soon see widespread adoption, and light-emitting diodes will replace ordinary light-emitting devices in coal mining applications. (9) Urban decorative lighting: In today's bustling commercial era, neon lights are an important symbol of urban prosperity, but they have many drawbacks, such as insufficient lifespan. Therefore, replacing neon lights with light-emitting diodes offers many advantages. Compared to neon lights, light-emitting diodes not only have a longer lifespan but also feature energy savings, simple drive and control, and maintenance-free operation. Replacing neon lights with light-emitting diodes is an inevitable trend in the development of lighting equipment.

Schischek electrical component structure

A thermopile is a pyroelectric infrared sensor, a device composed of thermocouples. It is widely used as a temperature detection device in fields such as ear thermometers, radiation thermometers, electric ovens, and food temperature detection. It consists of two or more thermocouples connected in series, with the thermoelectromotive forces output by each thermocouple superimposing on each other. It is used to measure small temperature differences or average temperatures. Structure of the thermopile: The radiation receiving surface is divided into several sections, each connected to a thermocouple; connecting them in series forms a thermopile. Depending on the application, practical thermopiles can be made in wire-type and thin-film types, as well as multi-channel and array-type devices.

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