MURRPLASTIKSYST electrical components Germany MURRPLASTIKSYST model MURRPLASTIKSYST price

MURRPLASTIKSYST electrical components are indispensable measuring instruments for departments such as power electronics, generally with the main purpose of measuring voltage, current, and resistance. Multimeters are divided into analog multimeters and digital multimeters according to the display method. It is a multi-function, multi-range measuring instrument. Generally, a multimeter can measure DC current, DC voltage, AC current, AC voltage, resistance, and audio levels. Some can also measure AC current, capacitance, inductance, and some semiconductor parameters (such as β). A multimeter is a magnetoelectric instrument with a rectifier that can measure various electrical parameters such as AC/DC current, voltage, and resistance. For each electrical quantity, there are generally several ranges. Also known as a multi-meter or simply multi-meter. A multimeter consists of a magnetoelectric ammeter (meter head), measuring circuit, and selector switch. Through the switching of the selector switch, various electrical parameters can be measured conveniently. The main basis for its circuit calculation is Ohm's law for closed circuits. There are many types of multimeters, and they should be selected according to different requirements during use.

MURRPLASTIKSYST electrical component principle

P-type semiconductor is formed by doping a small amount of trivalent element impurities, such as boron, into an intrinsic semiconductor (a completely pure and structurally complete semiconductor crystal). 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 lack of one electron, but 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, doping trivalent and pentavalent impurity elements into two different regions of an intrinsic semiconductor forms P-type and N-type regions. Based on the characteristics of N-type and P-type semiconductors, it can be seen that a concentration difference of electrons and holes appears at their junction. 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 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 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.

MURRPLASTIKSYST electrical component principle

Varactor diodes are a type of special diode. When a forward bias is applied, a large current is generated, the depletion region of the PN (positive and negative poles) junction narrows, the capacitance increases, and a diffusion capacitance effect is produced; when a reverse bias is applied, a transition capacitance effect is produced. However, since leakage current occurs when forward bias is applied, reverse bias is supplied in applications. Varactor diodes are also called voltage-controlled variable capacitors, which are semiconductors that change junction capacitance according to the provided voltage change. That is to say, as a variable capacitor, it can be applied to resonant circuits such as FM tuners and TV tuners, and FM modulation circuits. In fact, we can regard it as a PN junction. We think that if a reverse voltage V is applied to the PN junction (varactor diodes are used in reverse), then electrons in the N-type semiconductor are attracted to the positive pole, and holes in the P-type semiconductor are attracted to the negative pole, forming a depletion layer with neither electrons nor holes. The width of this depletion layer is set as d, which changes with the reverse voltage V. In this way, as the reverse voltage V increases, the depletion layer d widens, and the capacitance C of the diode decreases (according to C=kS/d), while as the reverse voltage decreases, the depletion layer width d narrows, and the capacitance of the diode increases. The change in reverse voltage V causes changes in the depletion layer, thereby changing the junction capacitance C of the voltage-controlled variable capacitor. The goal is achieved. Varactor diodes are semiconductor devices made using the principle of variable capacitance between PN junctions, and are used as variable capacitors in high-frequency tuning, communication, and other circuits. Varactor diodes have various packaging forms, such as glass encapsulation (glass-sealed), plastic encapsulation (plastic-sealed), metal casing encapsulation (metal-sealed), and leadless surface mounting. Usually, small and medium power varactor diodes adopt glass-sealed, plastic-sealed, or surface mounting, while higher power varactor diodes mostly adopt metal-sealed. Common varactor diode parameters.

MURRPLASTIKSYST electrical component principle

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

Weidou Intelligent Technology professionally sells German MURRPLASTIKSYST connectors, MURRPLASTIKSYST switches, MURRPLASTIKSYST relays, MURRPLASTIKSYST controllers, MURRPLASTIKSYST plugs, MURRPLASTIKSYST sensors, MURRPLASTIKSYST resistors, MURRPLASTIKSYST capacitors, MURRPLASTIKSYST bus systems, MURRPLASTIKSYST modules, MURRPLASTIKSYST cables, MURRPLASTIKSYST power supplies, MURRPLASTIKSYST interfaces, MURRPLASTIKSYST gateways, MURRPLASTIKSYST circuit breakers, MURRPLASTIKSYST original imports from Germany. Welcome customers to inquire and order.