hera electrical components Germany hera model hera price

hera electrical components are components of electronic components and small machines and instruments. They themselves often consist of several parts and can be used interchangeably in similar products; they often refer to certain parts in the electrical, radio, and instrumentation industries, and are a general term for electronic devices such as capacitors, transistors, hairsprings, and mainsprings. Common examples include diodes. Electronic components include: resistors, capacitors, inductors, potentiometers, electron tubes, heat sinks, electromechanical components, connectors, discrete semiconductor devices, electroacoustic devices, laser devices, electronic display devices, optoelectronic devices, sensors, power supplies, switches, micro special motors, electronic transformers, relays, printed circuit boards, integrated circuits, various circuits, piezoelectric, crystals, quartz, ceramic magnetic materials, substrate boards for printed circuits, special materials for electronic functional processes, electronic adhesive (tape) products, electronic chemical materials and parts, etc.

hera electrical component principle

P-type semiconductor is formed by doping intrinsic semiconductor (a completely pure, structurally perfect semiconductor crystal) with a small amount of trivalent impurity elements, such as boron. Since a boron atom has only three valence electrons, it forms covalent bonds with surrounding silicon atoms. Due to the lack of one electron, a vacancy is created in the crystal. When electrons on adjacent covalent bonds gain energy, they may fill this vacancy, turning the boron atom into an immobile negative ion, while the covalent bond of the original silicon atom forms a hole due to the missing electron. However, the entire semiconductor remains neutral. In this P-type semiconductor, conduction is mainly by holes, which are the majority carriers, while free electrons are the minority carriers. The principle of forming N-type semiconductor is similar to that of P-type. Pentavalent atoms, such as phosphorus, are doped into the intrinsic semiconductor. After doping, they form covalent bonds with silicon atoms, generating free electrons. In N-type semiconductors, electrons are the majority carriers, and holes are the minority carriers. Therefore, by doping trivalent and pentavalent impurity elements into two different regions of an intrinsic semiconductor, P-type and N-type regions are formed. Based on the characteristics of N-type and P-type semiconductors, it is known that a concentration difference of electrons and holes appears at their junction. Both electrons and holes diffuse from the high-concentration region to the low-concentration region, and their diffusion destroys the electrical neutrality at the original junction. PN junction unidirectional conductivity: When a forward voltage V is applied externally to the PN junction, the equilibrium state of the PN junction is broken under the action of this external electric field. Holes in the P region and electrons in the N region both move towards the PN junction. Holes neutralize the negative ions in the P region of the PN junction, and electrons neutralize the positive ions in the N region of the PN junction, thus narrowing the PN junction. As the external electric field increases, diffusion motion is further enhanced, and drift motion is weakened. When the external voltage exceeds the threshold voltage, the PN junction acts as a resistor with very small resistance, meaning the PN junction is conducting.

hera electrical component function

The main functions of a potentiometer in a circuit include: 1. Used as a voltage divider. A potentiometer is a continuously adjustable resistor. When adjusting the knob or slider of the potentiometer, the movable contact slides on the resistive body. At this time, an output voltage related to the external voltage applied to the potentiometer and the angle or travel of the movable arm can be obtained at the output terminal of the potentiometer. 2. Used as a rheostat. When a potentiometer is used as a rheostat, it should be connected as a two-terminal device, so that a smoothly and continuously changing resistance value can be obtained within the travel range of the potentiometer. 9. Used as a current controller. When a potentiometer is used as a current controller, one of the selected current output terminals must be the terminal led out from the sliding contact.

hera electrical component application

Inductors mainly play roles such as filtering, oscillation, delay, and wave trapping in circuits, as well as signal screening, noise filtering, current stabilization, and suppression of electromagnetic interference. The most common function of an inductor in a circuit is to form an LC filter circuit together with a capacitor. Capacitors have the characteristic of 'blocking DC and passing AC', while inductors have the function of 'passing DC and blocking AC'. If DC power accompanied by many interference signals passes through an LC filter circuit, the AC interference signals will be converted into heat energy by the inductor and consumed. When the relatively pure DC current passes through the inductor, the AC interference signals within it are also converted into magnetic induction and heat energy. Higher frequencies are most easily impeded by the inductor, which can suppress higher frequency interference signals. Inductors have the characteristic of blocking AC while allowing DC to pass smoothly; the higher the frequency, the greater the coil impedance. Therefore, the main functions of inductors are to isolate and filter AC signals, or to form resonant circuits with capacitors, resistors, etc.

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