CELO electrical components German CELO models CELO prices

CELO electrical components are accessory products used to achieve electrical connections, classified industrially within the category of connectors. As industrial automation levels rise and industrial control requirements become increasingly strict and precise, the usage of terminal blocks has gradually increased. With the development of the electronics industry, the scope of application for terminal blocks has expanded, and their varieties have multiplied. Besides PCB board terminals, the most widely used types include hardware terminals, nut terminals, spring terminals, and more.

CELO electrical components composition

Two-terminal electronic components made from resistive materials, with a specific structural form, that limit current flow in a circuit. Those with unchangeable resistance values are called fixed resistors. Those with variable resistance values are called potentiometers or variable resistors. An ideal resistor is linear, meaning the instantaneous current through the resistor is directly proportional to the applied instantaneous voltage. Some special resistors, such as thermistors, varistors, and sensitive elements, exhibit a non-linear relationship between voltage and current. Resistors are the most numerous components used in electronic circuits, typically available in different series based on power rating and resistance value for selection by circuit designers. In circuits, resistors are mainly used to adjust and stabilize current and voltage; they can serve as shunts and voltage dividers, or as matched loads for circuits. Depending on circuit requirements, they can also be used for negative or positive feedback in amplifier circuits, voltage-to-current conversion, or as voltage or current protection elements during input overload. They can also form RC circuits to serve as oscillation, filtering, bypass, differentiation, integration, and time constant elements.

CELO electrical components structure

A solid-state relay consists of three parts: an input circuit, isolation, and an output circuit. Based on different categories of input voltage, input circuits can be divided into DC input circuits, AC input circuits, 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 with TTL and MOS logic circuits. For control signals with fixed control voltage, resistive input circuits are adopted. 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 pairs, photodiode-bidirectional light-controlled thyristors, or photovoltaic cells to achieve isolated control between the control side and the load side. High-frequency transformer coupling utilizes self-excited high-frequency signals generated by the input control signal, which are coupled to the secondary side, then demodulated, rectified, and processed by logic circuits to form drive signals. The power switch of the solid-state relay is directly connected to the power supply and load terminals to achieve on/off switching of the load power. Mainly used components include high-power bipolar transistors, unidirectional thyristors, bidirectional thyristors, power field-effect transistors, and insulated-gate bipolar transistors. The output circuit of a solid-state relay can also be divided into DC output circuits, AC output circuits, and AC/DC output circuits. Based on load type, they can be classified into DC solid-state relays and AC solid-state relays. For DC output, bipolar devices or power field-effect transistors can be used; for AC output, two thyristors or one bidirectional thyristor are typically used. AC solid-state relays can be further divided into single-phase AC solid-state relays and three-phase AC solid-state relays. Based on the timing of conduction and turn-off, AC solid-state relays can be classified into random-turn-on AC solid-state relays and zero-crossing AC solid-state relays.

CELO electrical components classification

Fiber optic connectors can be divided into common single-mode and multi-mode connectors for silica-based optical fibers based on the transmission medium, as well as other fiber optic connectors using plastic etc. as the transmission medium. Based on the connector structure, they can be classified into: FC, SC, ST, LC, D6, DIN, MU, MT, and various other forms. Among them, ST connectors are typically used at wiring equipment ends, such as fiber patch panels and fiber modules; while SC and MT connectors are typically used at network equipment ends. Based on the shape of the fiber end face, they are classified into FC, PC (including SPC or UPC), and APC. Based on the number of fiber cores, they are divided into single-core and multi-core (such as MT-RJ). Fiber optic connectors are widely used and come in many varieties. In practical applications, we generally distinguish them based on the different structures of the fiber optic connectors.

Weidou Intelligent Technology specializes in selling German CELO connectors, CELO switches, CELO relays, CELO controllers, CELO plugs, CELO sensors, CELO resistors, CELO capacitors, CELO buses, CELO modules, CELO cables, CELO power supplies, CELO interfaces, CELO gateways, CELO circuit breakers, CELO original imports from Germany. We welcome inquiries and orders from users.