piher electrical components Germany piher model piher price

piher electrical components refer to mechanical equipment that converts mechanical energy into electrical energy. It is driven by hydraulic turbines, steam turbines, diesel engines, or other prime movers, converting the energy from water flow, air flow, fuel combustion, or nuclear fission into mechanical energy transmitted to the generator, which then converts it into electrical energy. Generators are widely used in industrial and agricultural production, national defense, science and technology, and daily life. There are many types of generators, but their operating principles are all based on the laws of electromagnetic induction and electromagnetic force. Therefore, the general principle of their construction is to use appropriate magnetic and conductive materials to form magnetic circuits and circuits that undergo mutual electromagnetic induction, thereby generating electromagnetic power to achieve energy conversion.

piher electrical component principle

P-type semiconductors are formed by doping intrinsic semiconductors (a completely pure, structurally intact semiconductor crystal) with a small amount of trivalent impurity elements, such as boron. Since boron atoms have only three valence electrons, they form 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, causing the boron atom to become 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 electrically neutral. In this type of P-type semiconductor, conduction is primarily through holes, which are the majority carriers, while free electrons are the minority carriers. The principle of forming N-type semiconductors 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 disrupts the electrical neutrality at the original junction. Unidirectional conductivity of the PN junction: When a forward voltage V is applied to the PN junction, the equilibrium state of the PN junction is broken under the influence of this external electric field. Holes in the P region and electrons in the N region move toward 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, while drift motion is weakened. When the external voltage exceeds the threshold voltage, the PN junction acts as a resistor with very low resistance, meaning the PN junction is conducting.

piher electrical component principle

Microphones have evolved from initial resistive electro-acoustic conversion to inductive and capacitive conversion. Many new microphone technologies have gradually developed, including aluminum ribbon dynamic microphones, as well as the currently widely used condenser microphones and electret microphones. The working principle of a dynamic microphone is that human voice causes the diaphragm to vibrate through the air. Then, the electromagnetic coil winding on the diaphragm and the magnet surrounding the dynamic microphone head form a magnetic field that is cut, generating a weak fluctuating current. The current is transmitted to the loudspeaker, which converts the fluctuating current back into sound through the reverse process. For ribbon microphones, the aluminum ribbon serves as both the microphone diaphragm and the conductor moving in the magnetic field. The ribbon is usually made of aluminum foil. To achieve an ideal resonant frequency, the ribbon is corrugated to maintain a precise tension value. The ribbon, acting as both conductor and diaphragm, is suspended in the magnetic field between two magnetic pole faces. It vibrates according to the frequency of the incident sound wave, simultaneously generating a certain voltage output at both ends of the ribbon. A condenser microphone has two metal plates. One plate is coated with an electret film and grounded, while the other plate is connected to the gate of a field-effect transistor (FET). A diode is connected between the gate and the source. The diaphragm of a condenser microphone is mostly made of perfluoroethylene propylene, which has good humidity performance, generates more surface charge, and is less affected by humidity. Since this transducer also has a capacitive structure with high internal signal impedance, a field-effect transistor must be used at its output terminal to extract and amplify the voltage signal generated by sound.

piher electrical component structure

A solid-state relay consists of three parts: input circuit, isolation, and output circuit. Depending on the input voltage category, the input circuit can be divided into DC input, AC input, and AC/DC input circuits. Some input control circuits also feature compatibility with TTL/CMOS, positive/negative logic control, and inversion functions, allowing convenient connection to TTL and MOS logic circuits. For control signals with fixed control voltage, a resistive input circuit is used. The isolation and coupling methods between the input and output circuits of solid-state relays include optocoupling and transformer coupling. Optocoupling typically uses photodiode-phototransistor, photodiode-bidirectional light-controlled thyristor, or photovoltaic cells to achieve isolated control between the control side and the load side. High-frequency transformer coupling utilizes the self-excited high-frequency signal generated by the input control signal, which is coupled to the secondary side, detected, rectified, and processed by logic circuits to form a drive signal. The power switch of the solid-state relay is directly connected to the power supply and load terminals to realize switching of the load power. Mainly used components include high-power bipolar transistors, unidirectional thyristors, bidirectional thyristors, power FETs, and insulated-gate bipolar transistors (IGBTs). The output circuit of a solid-state relay can also be divided into DC output, AC output, and AC/DC output forms. According to the load type, it can be divided into DC solid-state relays and AC solid-state relays. For DC output, bipolar devices or power FETs can be used; for AC output, two thyristors or one bidirectional thyristor are usually used. AC solid-state relays can be further divided into single-phase AC solid-state relays and three-phase AC solid-state relays. AC solid-state relays can be classified into random-turn-on AC solid-state relays and zero-crossing AC solid-state relays based on the timing of turn-on and turn-off.

Weidou Intelligent Technology specializes in selling German piher connectors, piher switches, piher relays, piher controllers, piher plugs, piher sensors, piher resistors, piher capacitors, piher buses, piher modules, piher cables, piher power supplies, piher interfaces, piher gateways, piher circuit breakers. piher original imports from Germany. Welcome customers to inquire and order.