tridonic electrical components Germany tridonic model tridonic price

tridonic electrical components are detection devices that can sense measured information and convert the sensed information into electrical signals or other required forms of output according to certain rules, to meet the requirements for information transmission, processing, storage, display, recording, and control. The existence and development of sensors give objects senses such as touch, taste, and smell, making objects come alive; sensors are an extension of human senses. Sensors feature miniaturization, digitization, intelligence, multifunctionality, systematization, and networking. They are the primary link in realizing automatic detection and automatic control. A device or apparatus that can sense a specified measured quantity and convert it into a usable signal according to a certain rule (mathematical function law), usually composed of a sensitive element and a conversion element.

tridonic 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, and the trip unit pulls the operating mechanism to act, causing the switch to trip instantaneously. During overload, the current increases, heat generation intensifies, and the bimetallic strip deforms to a certain extent to push the mechanism into action (the higher the current, the shorter the action time). There are electronic types that 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 drive 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 blowing out and extinguishing the arc is mainly to cool the arc to weaken thermal ionization, and on the other hand, to lengthen the arc by blowing to strengthen the recombination and diffusion of charged particles, while blowing away the charged particles in the arc gap to quickly 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. Its function is equivalent to the sum of part or all of the functions of electrical appliances such as knife switches, overcurrent relays, undervoltage relays, thermal relays, and residual current protective devices. It is an important protective electrical appliance 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, convenient 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), arc extinguishing systems, etc. The main contacts of a low-voltage circuit breaker are closed by manual operation or electric closing. After the main contacts are closed, 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, and 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 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 needed, press the start button to energize the coil.

tridonic electrical component composition

The printed circuit board is mainly composed of pads, vias, mounting holes, traces, components, connectors, fills, and electrical boundaries. (1) Pad: Metal holes used for soldering component pins. (2) Via: Includes metal vias and non-metal vias; metal vias are used to connect component pins between layers. (3) Mounting hole: Used to fix the circuit board. (4) Trace: Copper film of the electrical network used to connect component pins. (5) Connector: Components used for connection between circuit boards. (6) Fill: Copper pouring for the ground network, which can effectively reduce impedance. (7) Electrical boundary: Used to determine the size of the circuit board; all components on the circuit board must not exceed this boundary.

tridonic electrical component principle

1, Emitter emits electrons to the base region: The power supply Ub is applied to the emitter junction through the resistor Rb. The emitter junction is forward-biased, and the majority carriers (free electrons) in the emitter region continuously cross the emitter junction into the base region, forming the emitter current Ie. At the same time, the majority carriers in the base region also diffuse to the emitter region, but since the concentration of majority carriers is far lower than that of carriers in the emitter region, this current can be ignored. Therefore, it can be considered that the emitter junction is mainly an electron flow. 2, Diffusion and recombination of electrons in the base region: After electrons enter the base region, they first concentrate near the emitter junction, gradually forming an electron concentration difference. Under the action of the concentration difference, the electron flow is promoted to diffuse in the base region towards the collector junction, and is pulled into the collector region by the electric field of the collector junction, forming the collector current Ic. A very small part of electrons (because the base region is very thin) recombine with holes in the base region. The ratio of the diffused electron flow to the recombined electron flow determines the amplification capability of the transistor. 11, Collector region collects electrons: Since a large reverse voltage is applied externally to the collector junction, the electric field force generated by this reverse voltage will prevent electrons in the collector region from diffusing to the base region, and at the same time pull the electrons diffused to the vicinity of the collector junction into the collector region, thereby forming the main collector current Icn. In addition, the minority carriers (holes) in the collector region will also produce drift motion, flowing to the base region to form a reverse saturation current, represented by Icbo. Its value is very small, but it is extremely sensitive to temperature.

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