efen electrical components Germany efen model efen price

efen electrical components are devices that convert alternating current to direct current, and can be used in power supply units and for detecting radio signals, among other applications. Rectifiers can be made from vacuum tubes, ignitrons, solid-state silicon semiconductor diodes, mercury arcs, etc. Conversely, a device that converts direct current to alternating current is called an "inverter". In standby UPS systems, only battery charging is required, not power supply to the load, so only a charger is present. In double-conversion UPS systems, this device supplies power to the inverter and also charges the battery, hence it is called a rectifier/charger. A rectifier is a rectification device; simply put, it is a device that converts AC to DC. It has two main functions: first, to convert AC to DC, which is then filtered and supplied to the load or to the inverter; second, to provide charging voltage to the battery. Therefore, it also serves as a charger.

efen electrical component functions

The modulated pulses generated by the oscillation circuit pass through the reflection circuit and are emitted as light pulses by the LED GL. When the measured object enters the effective range of the receiver, the reflected light pulses enter the phototransistor DU. In the receiving circuit, the light pulses are demodulated into electrical pulse signals, amplified, synchronously gated and shaped, and then interference is eliminated using digital integration or RC integration. Finally, the photoelectric switch control signal is output by triggering the driver with or without delay. Photoelectric switches generally have good hysteresis characteristics, so even if the detected object shakes within a small range, the output state of the driver is not affected, keeping it in a stable operating zone. Meanwhile, the self-diagnostic system can display the light-receiving status and stable operating zone to monitor the photoelectric switch's operation at any time. Proximity switches are widely used in aviation, aerospace technology, and industrial production. They are also applied in daily life, such as in automatic doors in hotels, restaurants, and garages, as well as in automatic hot air blowers. For security and anti-theft purposes, important locations such as archives, accounting departments, financial institutions, museums, and vaults are typically equipped with anti-theft devices composed of various proximity switches. In measurement technology, such as for length and position measurements, and in control technology, such as for the measurement and control of displacement, speed, and acceleration, a large number of proximity switches are also used.

efen electrical component parameters

Rated voltage: refers to the safe voltage allowed for the switch during normal operation. If the voltage applied across the switch terminals exceeds this value, arcing and breakdown between the two contacts will occur. Rated current: refers to the maximum safe current allowed to pass through the switch when it is closed. If this value is exceeded, the switch contacts will burn out due to excessive current. Insulation resistance: refers to the resistance value between the conductive part and the insulating part of the switch. Contact resistance: refers to the resistance value between each pair of contacts when the switch is in the closed state. Dielectric strength: refers to the maximum voltage the switch can withstand between the conductor and ground. Service life: refers to the number of operations the switch can perform under normal working conditions.

efen electrical component composition

A sensor generally consists of four parts: a sensing element, a conversion element, a signal conditioning circuit, and an auxiliary power supply. The sensing element directly senses the measured quantity and outputs a physical quantity signal that has a definite relationship with the measured quantity; the conversion element converts the physical quantity signal output by the sensing element into an electrical signal; the signal conditioning circuit is responsible for amplifying and modulating the electrical signal output by the conversion element; the conversion element and the signal conditioning circuit generally also require power from the auxiliary power supply.

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