OPPLE electrical components Germany OPPLE model OPPLE price

OPPLE 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 and spark-free connection and disconnection of circuits, hence it is also called 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 and isolation functions, 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].

OPPLE electrical component structure

A thermopile is a pyroelectric infrared sensor, a device constructed from 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, where the thermoelectric potentials output by each thermocouple are superimposed. It is used to measure small temperature differences or average temperatures. Structure of a 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.

OPPLE electrical component applications

Thermistors can also be used as electronic circuit components for temperature compensation in instrument circuits and cold junction compensation for thermocouples. Utilizing the self-heating characteristics of NTC thermistors enables automatic gain control, forming RC oscillator amplitude stabilization circuits, delay circuits, and protection circuits. When the self-heating temperature is much higher than the ambient temperature, the resistance is also related to the heat dissipation conditions of the environment. Therefore, this characteristic of thermistors is often utilized in anemometers, flow meters, gas analyzers, and thermal conductivity analysis to create specialized detection elements. PTC thermistors are mainly used for overheat protection of electrical equipment, contactless relays, constant temperature control, automatic gain control, motor starting, time delay, automatic degaussing of color TVs, fire alarms, and temperature compensation. Main disadvantages: (1) The relationship between resistance and temperature is severely nonlinear; (2) Poor consistency and interchangeability of components; (3) Components are prone to aging and have poor stability; (4) Except for special high-temperature thermistors, most thermistors are only suitable for the range of 0 to 150 °C, which must be noted during use.

OPPLE electrical component classification

For most conductors, at a certain temperature, their resistance remains almost constant at a fixed value; this type of resistance is called linear resistance. For some materials, the resistance changes significantly with current (or voltage), and their volt-ampere characteristic is a curve; this type of resistance is called nonlinear resistance. For a nonlinear resistor under a given voltage (or current), the ratio of voltage to current is the static resistance at that operating point, and the slope of the volt-ampere characteristic curve is the dynamic resistance. The expression of nonlinear resistor characteristics is complex, but these nonlinear relationships are widely applied in electronic circuits.

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