ENNA GmbH electrical components Germany ENNA GmbH model ENNA GmbH price

ENNA GmbH electrical components are resistive elements with three terminals, whose resistance can be adjusted according to a specific variation pattern. A potentiometer typically consists of a resistive element and a movable wiper. As the wiper moves along the resistive element, a resistance value or voltage proportional to the displacement is obtained at the output. Potentiometers can be used as three-terminal or two-terminal components. The latter can be regarded as a variable resistor; since its role in the circuit is to obtain an output voltage related to the input voltage (applied voltage), it is called a potentiometer. A potentiometer is a type of variable resistor. It usually consists of a resistive element and a rotating or sliding system, where a moving contact moves on the resistive element to obtain a partial voltage output. The function of a potentiometer is to adjust voltage (including DC voltage and signal voltage) and current magnitude. Structural features of potentiometers: The resistive element of a potentiometer has two fixed terminals. By manually adjusting the shaft or slider, the position of the moving contact on the resistive element is changed, thereby altering the resistance between the moving contact and either fixed terminal, which in turn changes the voltage and current. A potentiometer is an adjustable electronic component. It consists of a resistive element and a rotating or sliding system. When a voltage is applied across the two fixed contacts of the resistive element, rotating or sliding the system changes the contact position on the resistive element, yielding a voltage between the moving contact and the fixed contact that is proportional to the contact position. It is mostly used as a voltage divider, in which case the potentiometer is a four-terminal component. A potentiometer is essentially a sliding rheostat, available in several styles, generally used for speaker volume control and laser head power adjustment. A potentiometer is an adjustable electronic component. It is a variable resistor used for voltage division. On the exposed resistive element, one or two movable metal contacts are pressed firmly. The contact position determines the resistance between either end of the resistive element and the contact. Classified by material: wirewound, carbon film, and solid-core potentiometers. Classified by the relationship between output/input voltage ratio and rotation angle: linear potentiometers (linear relationship) and functional potentiometers (curvilinear relationship). Main parameters include resistance, tolerance, and rated power. Widely used in electronic equipment, such as for volume control in audio systems and receivers.

ENNA GmbH electrical components applications

Specialized solid-state relays can feature short-circuit protection, overload protection, and overheat protection. When combined with hard-wired combinational logic encapsulation, they can realize intelligent modules required by users, directly applicable in control systems. Solid-state relays are widely used in computer peripheral interface equipment, temperature control systems, heating regulation, electric furnace heating control, motor control, CNC machinery, remote control systems, and industrial automation devices; signal lights, dimming, flashers, stage lighting control systems; instruments, medical devices, copiers, automatic washing machines; automatic fire fighting, security systems, and as switching switches for power capacitors in grid power factor compensation. Additionally, they are extensively used in chemical, coal mining, and other environments requiring explosion-proof, moisture-proof, and corrosion-resistant properties.

ENNA GmbH electrical components advantages

Components do not consume material. No matter how excellent a vacuum tube is, it will gradually deteriorate due to changes in cathode atoms and slow air leakage. Due to technical reasons, early transistors faced similar issues. Transistors consume very little electrical energy, only one-tenth to one-hundredth of that of vacuum tubes. Unlike vacuum tubes, they do not require filament heating to generate free electrons. A transistor radio can operate for six months to a year on just a few dry cells, which is difficult to achieve with vacuum tube radios. No preheating is required; they work immediately upon startup. For example, a transistor radio produces sound instantly, and a transistor TV displays images quickly. Vacuum tube equipment cannot achieve this; after switching on, one must wait a while before hearing sound or seeing images. Clearly, transistors have significant advantages in military, measurement, and recording applications. They are robust and reliable, resistant to shock and vibration, qualities unmatched by vacuum tubes. Additionally, transistors are only one-tenth to one-hundredth the size of vacuum tubes and generate little heat, making them suitable for designing compact, complex, and reliable circuits. Although transistor manufacturing processes are precise, the steps are simple, facilitating higher component mounting density.

ENNA GmbH electrical components 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 counter-force spring, causing the trip unit to pull the operating mechanism and trip the switch instantaneously. During overload, the current increases, intensifying heat generation. The bimetallic strip deforms to a certain extent, pushing the mechanism to act (the higher the current, the shorter the action time). Electronic types use current transformers to collect phase currents, comparing them with set values. When current abnormalities occur, the microprocessor sends a signal to activate the electronic trip unit, which drives the operating mechanism. The function of a circuit breaker is to connect and disconnect load circuits, as well as to interrupt fault circuits, preventing accident escalation and ensuring safe operation. Arc extinguishing is a critical issue for high-voltage circuit breakers. The principle of blow-out arc extinguishing mainly involves cooling the arc to reduce thermal ionization. On the other hand, blowing the arc elongates it, enhancing the recombination and diffusion of charged particles, while simultaneously dispersing charged particles in the arc gap, rapidly restoring the dielectric insulation strength. Low-voltage circuit breakers, also known as automatic air switches, can connect and disconnect load circuits and control motors that do not start frequently. Their functions equate to the sum of some or all functions of knife switches, overcurrent relays, undervoltage relays, thermal relays, and residual current protective devices, making them important protective appliances in low-voltage distribution networks. Low-voltage circuit breakers offer multiple protection functions (overload, short-circuit, undervoltage protection, etc.), adjustable action values, high breaking capacity, easy operation, and safety, leading to widespread application. Structure and working principle: Low-voltage circuit breakers consist of an operating mechanism, contacts, protective 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 them 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, the armature of the overcurrent trip unit attracts, causing the free-trip mechanism to act and open the main contacts, disconnecting the main circuit. When the circuit is overloaded, the thermal element of the thermal trip unit heats up, bending the bimetallic strip and pushing the free-trip mechanism to act. When the circuit experiences undervoltage, 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. For remote control, pressing the start button energizes the coil.

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