m+r multitronik electrical components Germany m+r multitronik model m+r multitronik price

m+r multitronik electrical component is an energy conversion device that converts DC electrical energy into AC electrical energy with a specific frequency; the circuit it forms is called an oscillating circuit. An oscillator is simply a frequency source, generally used in phase-locked loops. In detail, it is a device that can convert DC electrical energy into AC electrical energy on its own without external signal excitation. It is generally divided into two types: positive feedback and negative resistance. The term "oscillation" implies AC; the oscillator includes the process and function of transitioning from non-oscillating to oscillating. Such a device capable of converting DC electrical energy to AC electrical energy can be called an "oscillator." Oscillators are mainly divided into two types: harmonic oscillators and relaxation oscillators. They are electronic components used to generate repetitive electronic signals (usually sine waves or square waves). The circuit they form is called an oscillating circuit. It is an electronic circuit or device that can convert DC electricity into AC electrical signal output with a specific frequency. There are many types; classified by oscillation excitation method, they include self-excited oscillators and externally excited oscillators; classified by circuit structure, they include RC oscillators, LC oscillators, crystal oscillators, tuning fork oscillators, etc.; classified by output waveform, they include sine wave, square wave, and sawtooth wave oscillators. They are widely used in the electronics industry, medical care, scientific research, and other aspects.

m+r multitronik electrical component classification

Thermistor materials are generally divided into three categories: semiconductor, metal, and alloy: 1. Semiconductor thermistor materials include single-crystal semiconductors, polycrystalline semiconductors, glass semiconductors, organic semiconductors, and metal oxides. They all have very large temperature coefficients of resistance and high resistivity, resulting in high sensitivity for sensors made from them. Based on the temperature coefficient of resistance, they can also be divided into negative temperature coefficient (NTC) materials and positive temperature coefficient (PTC) materials. For example, barium titanate ceramic is an ideal PTC semiconductor material. Both types of materials are widely used in temperature measurement, temperature control, temperature compensation, switching circuits, overload protection, and time delay applications, such as in the manufacture of thermistor thermometers, thermistor switches, and thermistor delay relays. Due to the exponential relationship between resistance and temperature, the temperature measurement range is narrow and uniformity is poor. 2. Metal thermistor materials are widely used as thermal resistors for temperature measurement, current limiters, and automatic constant-temperature heating elements. Examples include platinum resistance thermometers, nickel resistance thermometers, and copper resistance thermometers. Among these, platinum temperature sensors exhibit significantly high precision and stability in various media (including corrosive media). However, their widespread application is limited by the scarcity and high cost of platinum. Copper temperature sensors are cheaper, but long-term use in corrosive media can lead to significant changes in static characteristics and resistance values. Nickel temperature sensors are widely used abroad and are considered a relatively ideal material due to their high sensitivity, satisfactory reproducibility, and stability. 3. Alloy thermistor materials, also known as thermistor alloys. This type of alloy has high resistivity, and its resistance value is sensitive to temperature changes, making it a good material for manufacturing temperature-sensitive sensors. The performance requirements for thermistor alloys as temperature-sensitive sensors are as follows: (1) sufficiently high resistivity; (2) relatively high temperature coefficient of resistance; (3) linear expansion coefficient close to that of the experimental material; (4) low strain sensitivity coefficient; (11) good repeatability of the resistance-temperature curve during heating and cooling within the operating temperature range.

m+r multitronik electrical component principle

A circuit breaker generally consists of a contact system, arc extinguishing system, operating mechanism, trip unit, and housing. During a short circuit, the magnetic field generated by the high current overcomes the reaction spring force, causing the trip unit to pull the operating mechanism and instantly trip the switch. During an overload, the current increases, intensifying heat generation; the bimetallic strip deforms to a certain extent to push the mechanism into action (the higher the current, the shorter the action time). Electronic types use current transformers to collect the current magnitude of each phase, compare it with the set value, and when the current is abnormal, the microprocessor sends a signal to cause the electronic trip unit to actuate the operating mechanism. The function of a circuit breaker is to cut off and connect load circuits, as well as to cut off fault circuits, prevent accident expansion, and ensure safe operation. Arc extinguishing is a problem that must be solved by high-voltage circuit breakers. The principle of blow-out arc extinguishing is mainly to cool the arc to weaken thermal ionization; on the other hand, blowing the arc elongates it to strengthen the recombination and diffusion of charged particles, while blowing away charged particles in the arc gap to rapidly restore the insulation strength of the medium. Low-voltage circuit breakers, also known as automatic air switches, can be used to connect and disconnect load circuits, and can also be used to control motors that do not start frequently. Their functions are equivalent to the sum of part or all of the functions of electrical components such as knife switches, overcurrent relays, undervoltage relays, thermal relays, and residual current protective devices. They are important protective electrical appliances in low-voltage distribution networks. Low-voltage circuit breakers have multiple protection functions (overload, short circuit, undervoltage protection, etc.), adjustable action values, high breaking capacity, easy operation, safety, and other advantages, so they are widely used. Structure and working principle: Low-voltage circuit breakers consist of an operating mechanism, contacts, protection devices (various trip units), and an arc extinguishing system. The main contacts of a low-voltage circuit breaker are closed manually or electrically. After the main contacts close, the free-trip mechanism locks the main contacts in the closed position. The coil of the overcurrent trip unit and the thermal element of the thermal trip unit are connected in series with the main circuit, while the coil of the undervoltage trip unit is connected in parallel with the power supply. When a short circuit or severe overload occurs in the circuit, the armature of the overcurrent trip unit attracts, causing the free-trip mechanism to act and the main contacts to disconnect the main circuit. When the circuit is overloaded, the thermal element of the thermal trip unit heats up, causing the bimetallic strip to bend and push the free-trip mechanism into action. When the circuit voltage is too low, the armature of the undervoltage trip unit releases, also causing the free-trip mechanism to act. The shunt trip unit is used for remote control; during normal operation, its coil is de-energized. When remote control is required, pressing the start button energizes the coil.

m+r multitronik electrical component principle

A circuit breaker generally consists of a contact system, arc extinguishing system, operating mechanism, trip unit, and housing. During a short circuit, the magnetic field generated by the high current overcomes the reaction spring force, causing the trip unit to pull the operating mechanism and instantly trip the switch. During an overload, the current increases, intensifying heat generation; the bimetallic strip deforms to a certain extent to push the mechanism into action (the higher the current, the shorter the action time). Electronic types use current transformers to collect the current magnitude of each phase, compare it with the set value, and when the current is abnormal, the microprocessor sends a signal to cause the electronic trip unit to actuate the operating mechanism. The function of a circuit breaker is to cut off and connect load circuits, as well as to cut off fault circuits, prevent accident expansion, and ensure safe operation. Arc extinguishing is a problem that must be solved by high-voltage circuit breakers. The principle of blow-out arc extinguishing is mainly to cool the arc to weaken thermal ionization; on the other hand, blowing the arc elongates it to strengthen the recombination and diffusion of charged particles, while blowing away charged particles in the arc gap to rapidly restore the insulation strength of the medium. Low-voltage circuit breakers, also known as automatic air switches, can be used to connect and disconnect load circuits, and can also be used to control motors that do not start frequently. Their functions are equivalent to the sum of part or all of the functions of electrical components such as knife switches, overcurrent relays, undervoltage relays, thermal relays, and residual current protective devices. They are important protective electrical appliances in low-voltage distribution networks. Low-voltage circuit breakers have multiple protection functions (overload, short circuit, undervoltage protection, etc.), adjustable action values, high breaking capacity, easy operation, safety, and other advantages, so they are widely used. Structure and working principle: Low-voltage circuit breakers consist of an operating mechanism, contacts, protection devices (various trip units), and an arc extinguishing system. The main contacts of a low-voltage circuit breaker are closed manually or electrically. After the main contacts close, the free-trip mechanism locks the main contacts in the closed position. The coil of the overcurrent trip unit and the thermal element of the thermal trip unit are connected in series with the main circuit, while the coil of the undervoltage trip unit is connected in parallel with the power supply. When a short circuit or severe overload occurs in the circuit, the armature of the overcurrent trip unit attracts, causing the free-trip mechanism to act and the main contacts to disconnect the main circuit. When the circuit is overloaded, the thermal element of the thermal trip unit heats up, causing the bimetallic strip to bend and push the free-trip mechanism into action. When the circuit voltage is too low, the armature of the undervoltage trip unit releases, also causing the free-trip mechanism to act. The shunt trip unit is used for remote control; during normal operation, its coil is de-energized. When remote control is required, pressing the start button energizes the coil.

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