COOPERM electrical components Germany COOPERM model COOPERM price

COOPERM electrical component 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 testing. The entry details the basic unit of a thermopile—the thermocouple; and provides a detailed introduction to the structure, working principle, main parameters, and applications of thermopiles.

COOPERM electrical component classification

1, classified by operating nature into transmitting antennas and receiving antennas. 2, classified by application into communication antennas, broadcast antennas, television antennas, radar antennas, etc. 3, classified by directivity into omnidirectional antennas and directional antennas, etc. 4, classified by operating wavelength into ultra-long wave antennas, long wave antennas, medium wave antennas, short wave antennas, ultra-short wave antennas, microwave antennas, etc. 5, classified by structural form and working principle into wire antennas and aperture antennas, etc. Characteristic parameters describing antennas include radiation pattern, directivity coefficient, gain, input impedance, radiation efficiency, polarization, and bandwidth. 6, classified by dimensionality into two types: (1) One-dimensional antennas consist of many wires, which are either straight like those used in mobile phones, or have clever shapes, like the old rabbit-ear antennas used on televisions before cable appeared. Monopole and dipole antennas are the two most basic one-dimensional antennas. (2) Two-dimensional antennas: diverse variations, including patch (a square piece of metal), array (a bundle of patches organized in a two-dimensional pattern), horn, and dish. 17, antennas can be divided into three major categories based on usage scenarios: handheld transceiver antennas, vehicle-mounted antennas, and base station antennas. Handheld transceiver antennas: antennas for personal use with handheld walkie-talkies, commonly rubber antennas and telescopic antennas. Vehicle-mounted antennas: communication antennas originally designed for installation on vehicles, with suction cup antennas being the most common and widespread. Vehicle-mounted antenna structures also include shortened types, quarter-wavelength, center-loaded, five-eighths wavelength, and double half-wavelength antennas. Base station antennas: play a critical role in the entire communication system, especially at communication hubs acting as switching stations. Common base station antennas include fiberglass high-gain antennas, four-ring array antennas (eight-ring array antennas), and directional an

COOPERM electrical component characteristics

(1) loudspeaker has two terminals (two leads); when a single loudspeaker is used, the two pins have no positive or negative polarity distinction, but when multiple loudspeakers are used simultaneously, the two pins have polarity distinctions. (2) loudspeaker has a paper cone, which is usually black, but also available in white. (3) loudspeaker shapes include circular, square, and oval categories. (4) behind the loudspeaker paper cone is a magnet; when touching the magnet of an external-magnet loudspeaker with a metal screwdriver, one can feel the presence of magnetism; internal-magnet loudspeakers do not give this sensation, but there is indeed a magnet inside the housing. (5) loudspeaker is mounted on the machine panel or inside the speaker enclosure.

COOPERM electrical component principle

The forward characteristic of the volt-ampere characteristic curve of a Zener diode is similar to that of a standard diode. In the reverse characteristic, when the reverse voltage is lower than the reverse breakdown voltage, the reverse resistance is very high and the reverse leakage current is extremely small. However, when the reverse voltage approaches the critical value of the reverse voltage, the reverse current increases suddenly, known as breakdown. At this critical breakdown point, the reverse resistance drops suddenly to a very small value. Although the current varies over a wide range, the voltage across the diode remains basically stable near the breakdown voltage, thereby achieving the voltage stabilization function of the diode.

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