KELINE electrical components, German KELINE models, KELINE prices

KELINE electrical components are instruments that measure by converting high primary current to low secondary current based on the principle of electromagnetic induction. A current transformer consists of a closed iron core and windings. Its primary winding has very few turns and is connected in series in the circuit where the current needs to be measured. Therefore, the full line current often flows through it. The secondary winding has more turns and is connected in series in the measuring instrument and protection circuits. When the current transformer is in operation, its secondary circuit is always closed, so the impedance of the measuring instrument and the coil connected in series in the protection circuit is very small, and the operating state of the current transformer is close to a short circuit. The current transformer converts high primary current to low secondary current for measurement; the secondary side must not be open-circuited. The principle of the current transformer is based on electromagnetic induction. A current transformer consists of a closed iron core and windings. Its primary winding has very few turns and is connected in series in the circuit where the current needs to be measured, so the full line current often flows through it. The secondary winding has more turns and is connected in series in the measuring instrument and protection circuits. When the current transformer is in operation, its secondary circuit is always closed, so the impedance of the measuring instrument and the coil connected in series in the protection circuit is very small, and the operating state of the current transformer is close to a short circuit.

KELINE electrical component composition

The circuit board mainly consists of pads, vias, mounting holes, traces, components, connectors, copper pours, and electrical boundaries. (1) Pad: A metal hole used to solder component pins. (2) Via: Includes metallic vias and non-metallic vias; metallic 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) Copper pour: Used for copper cladding of the ground network, which can effectively reduce impedance. (7) Electrical boundary: Used to determine the size of the circuit board; no components on the circuit board may exceed this boundary.

KELINE electrical component principle

The main principle of a diode is to utilize the unidirectional conductivity of the PN junction. Adding leads and packaging to the PN junction forms a diode. A crystal diode is a PN junction formed by P-type semiconductor and N-type semiconductor. A space charge layer is formed on both sides of its interface, establishing a built-in electric field. When there is no external voltage, it is in electrical equilibrium because the diffusion current caused by the carrier concentration difference across the PN junction equals the drift current caused by the built-in electric field. When there is a forward voltage bias from the outside, the mutual cancellation effect of the external electric field and the built-in electric field increases the diffusion current of carriers, causing a forward current. When there is a reverse voltage bias from the outside, the external electric field and the built-in electric field are further strengthened, forming a reverse saturation current within a certain reverse voltage range that is independent of the reverse bias voltage value. When the applied reverse voltage reaches a certain level, the electric field strength in the space charge layer of the PN junction reaches a critical value, causing a carrier multiplication process that generates a large number of electron-hole pairs, resulting in a large reverse breakdown current, known as the diode breakdown phenomenon. Reverse breakdown of the PN junction is divided into Zener breakdown and avalanche breakdown.

KELINE electrical component function

The self-induced electromotive force in an inductor coil always opposes the change in current within the coil. The inductor coil impedes alternating current; the magnitude of this impedance is called inductive reactance xl, measured in ohms. Its relationship with inductance l and AC frequency f is xl=2πfl. Inductors are mainly classified into high-frequency choke coils and low-frequency choke coils. An inductor coil connected in parallel with a capacitor can form an lc tuning circuit. That is, when the natural oscillation frequency f0 of the circuit equals the frequency f of the AC signal, the inductive reactance and capacitive reactance of the loop are equal. Consequently, electromagnetic energy oscillates back and forth between the inductor and the capacitor; this is the resonance phenomenon of the lc loop. At resonance, the inductive reactance and capacitive reactance of the circuit are equal in magnitude but opposite in direction, minimizing the total impedance of the loop and maximizing the current (referring to AC signals where f="f9"). The lc resonant circuit has a frequency selection function, capable of selecting AC signals of a specific frequency f.

Weidou Intelligent Technology professionally sells German KELINE connectors, KELINE switches, KELINE relays, KELINE controllers, KELINE plugs, KELINE sensors, KELINE resistors, KELINE capacitors, KELINE buses, KELINE modules, KELINE cables, KELINE power supplies, KELINE interfaces, KELINE gateways, and KELINE circuit breakers. KELINE products are original imports from Germany. Customers are welcome to inquire and place orders.