UNIQUADREX electrical components Germany UNIQUADREX model UNIQUADREX price

UNIQUADREX electrical components are devices for making detachable (active) connections between optical fibers. They precisely align the two end faces of the optical fibers to maximize the coupling of light energy output from the transmitting fiber into the receiving fiber, and to minimize the impact on the system caused by their insertion into the optical link. This is the basic requirement for fiber optic connectors. To a certain extent, fiber optic connectors affect the reliability and various performance metrics of optical transmission systems.

UNIQUADREX electrical components features

A solid-state relay is a contactless electronic switch with isolation functionality. It has no mechanical contact parts during switching. Therefore, in addition to having the same functions as electromagnetic relays, solid-state relays also feature logic circuit compatibility, resistance to vibration and mechanical shock, unrestricted installation orientation, good moisture-proof, mold-proof, and corrosion-resistant properties, excellent performance in explosion-proofing and ozone pollution prevention, low input power, high sensitivity, low control power, good electromagnetic compatibility, low noise, and high operating frequency. There are no mechanical parts inside the solid-state relay, and the structure adopts a fully sealed potting method. Therefore, solid-state relays have advantages such as vibration resistance, corrosion resistance, long service life, and high reliability. AC solid-state relays adopt zero-crossing triggering technology, have short switching times, and can be used in higher-frequency applications. Optical isolation is used between the input and output circuits, resulting in very low input power consumption. The output terminal has a protection circuit and strong load capacity.

UNIQUADREX electrical components types

(1)Vacuum tubes are classified by application into voltage amplifier tubes, power amplifier tubes, gas-filled tubes, thyratrons, ignitrons, frequency converter tubes, rectifier tubes, detector tubes, tuning indicator tubes (magic eye), voltage regulator tubes, etc. (2)Vacuum tubes are classified by the number of electrodes into voltage amplifier tubes, triodes, tetrodes, pentodes, hexodes, heptodes, octodes, nonodes, and composite tubes. Tubes with more than three electrodes are also called multi-electrode or multi-grid tubes. (3)Vacuum tubes are classified by shape and envelope material into bottle-shaped glass tubes (ST tubes), "acorn" tubes, cylindrical glass tubes (GT tubes), large glass tubes (G type tubes), metal-ceramic tubes, miniature tubes (also called peanut or finger-shaped tubes, MT tubes), lighthouse tubes (tower tubes), and subminiature tubes (pencil tubes). (4)Vacuum tubes are classified by internal structure into single diodes, diodes, double-diode triodes, double diodes, single triodes, power pentodes, beam tetrodes, beam pentodes, dual diodes, diode-pentode composite tubes, beam tetrodes, triode-pentode composite tubes, triode-hexode composite tubes, triode-heptode composite tubes, and various types of beam power tubes. (5)Vacuum tubes are classified by cathode heating method into directly heated cathode vacuum tubes (current passes directly through the cathode to achieve thermionic emission) and indirectly heated cathode vacuum tubes (the cathode is heated by a filament adjacent to it). (6)Vacuum tubes are classified by shielding method into sharp-cutoff shielded vacuum tubes and remote-cutoff shielded vacuum tubes. (7)Vacuum tubes are classified by cooling method into water-cooled vacuum tubes, air-cooled vacuum tubes, and natural convection-cooled vacuum tubes.

UNIQUADREX electrical components classification

For different application scenarios, the purpose of using varistors varies, and the voltage/current stress applied to the varistor is not the same. Therefore, the requirements for varistors differ. Paying attention to these differences is crucial for correct usage. According to the purpose of use, varistors can be divided into two main categories: protection varistors and circuit function varistors. (1) Protection varistors: 1 Distinguish between varistors for power supply protection and those for signal line or data line protection, as they must meet different technical standard requirements. 2 According to the different continuous operating voltages applied to the varistor, varistors across power lines can be divided into AC type and DC type. The aging characteristics of varistors under these two voltage stresses are different. 9 According to the different abnormal overvoltage characteristics withstand by the varistor, varistors can be divided into surge suppression type, high-power type, and high-energy type. (2) Surge suppression type: Refers to varistors used to suppress transient overvoltages such as lightning overvoltage and switching overvoltage. The occurrence of this transient overvoltage is random and non-periodic, and the peak current and voltage may be very high. The vast majority of varistors belong to this category. (3) High-power type: Refers to varistors used to absorb continuous pulse groups that occur periodically, such as varistors connected in parallel to switching power supply converters. Here, the impulse voltage occurs periodically, and the period is known. The energy value can generally be calculated. The voltage peak is not large, but due to the high frequency of occurrence, the average power is quite high. (4) High-energy type: Refers to varistors used to absorb magnetic energy in large inductive coils such as generator excitation coils and lifting electromagnet coils. For such applications, the main technical indicator is energy absorption capacity. The protective function of varistors can be repeated many times in most application scenarios, but sometimes they are made into one-time protective devices like current fuses. For example, varistors with short-circuit contacts connected in parallel to the loads of certain current transformers.

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