Peters Indu-Produkt electrical components Germany Peters Indu-Produkt models Peters Indu-Produkt prices

Peters Indu-Produkt electrical components are varactor diodes, also known as "variable reactance diodes," made by utilizing the characteristic that the junction capacitance of a PN junction changes with the applied voltage when reverse-biased. As the reverse bias voltage increases, the junction capacitance decreases; conversely, it increases. The capacitance of a varactor diode is generally small, with maximum values ranging from tens of pF to hundreds of pF. It is mainly used in high-frequency circuits for automatic tuning, frequency modulation, and phase adjustment, such as serving as a variable capacitor in the tuning circuit of a television receiver. The main parameters are: zero-bias junction capacitance, zero-bias quality factor, reverse breakdown voltage, center reverse bias voltage, nominal capacitance, capacitance variation range (in picofarads), and cutoff frequency.

Peters Indu-Produkt electrical component principles

A transformer is a device that changes AC voltage using the principle of electromagnetic induction. Its main components are the primary coil, secondary coil, and iron core (magnetic core). In electrical equipment and wireless circuits, it is commonly used for stepping voltage up or down, impedance matching, and safety isolation. In generators, whether the coil moves through a magnetic field or the magnetic field moves through a fixed coil, an electromotive force is induced in the coil. In both cases, the value of the magnetic flux remains unchanged, but the amount of magnetic flux linking the coil varies; this is the principle of mutual induction. A transformer is a device that utilizes electromagnetic mutual induction to transform voltage, current, and impedance.

Peters Indu-Produkt electrical component classification

Based on the working power supply, motors can be divided into DC motors and AC motors. Among them, AC motors are further divided into single-phase motors and three-phase motors. According to structure and working principle, motors can be classified into DC motors, asynchronous motors, and synchronous motors. Synchronous motors can be further divided into permanent magnet synchronous motors, reluctance synchronous motors, and hysteresis synchronous motors. Asynchronous motors can be divided into induction motors and AC commutator motors. Induction motors include three-phase asynchronous motors, single-phase asynchronous motors, and shaded-pole asynchronous motors. AC commutator motors include single-phase series-wound motors, AC/DC universal motors, and repulsion motors. Based on starting and running methods, motors can be classified into capacitor-start single-phase asynchronous motors, capacitor-run single-phase asynchronous motors, capacitor-start-and-run single-phase asynchronous motors, and split-phase single-phase asynchronous motors. Based on application, motors can be divided into drive motors and control motors. Drive motors include motors for power tools, household appliances, and other general small mechanical equipment. Control motors include stepper motors and servo motors. Based on rotor structure, motors can be divided into squirrel-cage induction motors and wound-rotor induction motors. Based on operating speed, motors can be classified into high-speed motors, low-speed motors, constant-speed motors, and adjustable-speed motors.

Peters Indu-Produkt electrical component classification

(1) Point-contact diodes have a small PN junction contact area, cannot pass large forward currents or withstand high reverse voltages, but offer good high-frequency performance, making them suitable for use in high-frequency detection circuits and switching circuits. (2) Surface-contact diodes have a large PN junction contact area, can pass larger currents, and can withstand higher reverse voltages, making them suitable for use in rectifier circuits. (3) Planar diodes have a small PN junction area when used as switching tubes in pulse digital circuits, and a larger PN junction area when used for high-power rectification. (4) Zener diodes are a special type of surface-contact semiconductor silicon diode with voltage stabilization capabilities. The main difference between zener diodes and ordinary diodes is that zener diodes operate in the reverse breakdown state of the PN junction. By implementing process measures during manufacturing and limiting the magnitude of reverse current during use, it is ensured that the zener diode will not be damaged by overheating in the reverse breakdown state. Unlike general diodes, the reverse breakdown of a zener diode is reversible; as long as the current does not exceed the allowable value, the PN junction will not overheat and fail. When the external reverse voltage is removed, the zener diode restores its original performance, so it has good repetitive breakdown characteristics. (5) Photodiodes, also known as photosensitive diodes, have a glass window on their casing to facilitate light reception. Their characteristic is that when light irradiates the PN junction, electron-hole pairs are generated, increasing the concentration of minority carriers in the semiconductor. Under a certain reverse bias voltage, this causes the reverse current to increase. Therefore, the reverse current increases linearly with the intensity of illumination. When there is no illumination, the volt-ampere characteristics of a photodiode are the same as those of an ordinary diode. As light-controlled components, photodiodes can be used for various object detection, photoelectric control, and automatic alarm applications. When made into large-area photodiodes, they can serve as an energy source and are called solar cells. In this case, they do not require an external power supply and can directly convert light energy into electrical energy. (6) Light-emitting diodes are solid-state semiconductor display devices that directly convert electrical energy into light energy, abbreviated as LED. Similar to ordinary diodes, light-emitting diodes are also composed of a PN junction. The PN junction of a light-emitting diode is encapsulated in a transparent plastic shell, with shapes including square, rectangular, and circular. Light-emitting diodes have advantages such as low drive voltage, small operating current, strong resistance to vibration and shock, small size, high reliability, low power consumption, and long service life, and are widely used in signal indication circuits. In electronic technology, commonly used numeric displays rely on light-emitting diodes. The principle of light-emitting diodes is opposite to that of photodiodes. When a light-emitting diode is forward-biased and current passes through it, it emits light due to the energy released when electrons and holes recombine directly. Its spectral range is relatively narrow, and its wavelength depends on the base material used.

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