Suntronix electrical components German Suntronix models Suntronix prices

Suntronix electrical components are devices that convert alternating current into direct current, and can be used in power supply units and for detecting radio signals, etc. Rectifiers can be made from vacuum tubes, ignitrons, solid-state silicon semiconductor diodes, mercury arcs, etc. Conversely, a device that converts direct current into alternating current is called an "inverter". In standby UPS systems, only the battery needs to be charged, without supplying power to the load, so there is only a charger. In double-conversion UPS systems, this device supplies power to the inverter and also charges the battery, so 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 acts as a charger.

Suntronix electrical component parameters

1. Nominal varistor voltage: refers to the voltage value across the varistor when a pulse current of specified duration passes through it. 2. Voltage ratio: refers to the ratio of the voltage generated by the current in the varistor to the voltage generated by the current in the varistor. 3. Maximum limiting voltage: the peak voltage across the varistor under the maximum pulse peak current Ip that the varistor can withstand and under a specified waveform. 4. Residual voltage ratio: when the current passing through the varistor is at a certain value, the voltage generated across it is called the residual voltage for that current value. The residual voltage ratio is the ratio of the residual voltage to the nominal voltage. 5. Surge current capacity: Surge current capacity, also known as surge current, refers to the maximum pulse current value allowed to pass through the varistor under specified conditions. 6. Leakage current: Leakage current, also known as standby current, refers to the current flowing through the varistor at a specified temperature and maximum DC voltage. 7. Voltage temperature coefficient: refers to the rate of change of the varistor's nominal voltage within a specified temperature range, i.e., the relative change in voltage across the varistor when the temperature changes while the current through the varistor remains constant. 8. Current temperature coefficient: refers to the relative change in the current flowing through the varistor when the temperature changes while the voltage across the varistor remains constant. 9. Voltage nonlinearity coefficient: refers to the ratio of the static resistance value to the dynamic resistance value of the varistor under a given applied voltage. 10. Insulation resistance: refers to the resistance value between the lead wires of the varistor and the insulating surface of the resistive body. 11. Static capacitance: refers to the inherent capacitance of the varistor itself. 12. Rated power: the maximum power at which the varistor operates at a specific ambient temperature causing a change in varistor voltage. 14. Maximum impulse current: the maximum impulse current that causes a change in varistor voltage when the varistor is subjected to a specific pulse current impulse once or twice.

Suntronix electrical component applications

The most basic application of ordinary thyristors is controlled rectification. The familiar diode rectifier circuit belongs to uncontrolled rectifier circuits. If diodes are replaced with thyristors, a controlled rectifier circuit can be formed. Taking the simplest single-phase half-wave controlled rectifier circuit as an example, during the positive half-cycle of the sinusoidal AC voltage U2, if there is no input trigger pulse Ug at the gate of VS, VS will still not conduct. Only when U2 is in the positive half-cycle and a trigger pulse Ug is applied externally to the gate, the thyristor is triggered into conduction. Draw its waveforms (c) and (d); only when the trigger pulse Ug arrives is there voltage UL output across the load RL. If Ug arrives early, the thyristor conducts earlier; if Ug arrives late, the thyristor conducts later. By changing the arrival time of the trigger pulse Ug at the gate, the average value UL of the output voltage across the load can be adjusted. In electrical engineering technology, half a cycle of AC is often defined as 180°, called the electrical angle. Thus, in each positive half-cycle of U2, the electrical angle experienced from the zero value to the instant the trigger pulse arrives is called the control angle α; the electrical angle during which the thyristor conducts in each positive half-cycle is called the conduction angle θ. Obviously, both α and θ are used to indicate the conduction or blocking range of the thyristor during the half-cycle where it bears forward voltage. By changing the control angle α or the conduction angle θ, the average value UL of the pulsed DC voltage across the load is changed, achieving controlled rectification. Low-power plastic-packaged bidirectional triac thyristors are typically used in sound and light control lighting systems. Rated current is less than 10A. Large and medium-power plastic-packaged and iron-packaged thyristors are typically used in power-type controlled voltage regulation circuits, such as adjustable DC output power supplies, etc. High-power high-frequency thyristors are typically used in industry, such as in high-frequency melting furnaces, etc.

Suntronix electrical component structure

A bipolar junction transistor is made by fabricating two closely spaced PN junctions on a single semiconductor substrate. These two PN junctions divide the entire semiconductor into three parts: the middle part is the base region, and the two side parts are the emitter region and the collector region. There are two arrangement types: PNP and NPN. Corresponding electrodes are led out from the three regions, namely the base b, emitter e, and collector c. The PN junction between the emitter region and the base region is called the emitter junction, and the PN junction between the collector region and the base region is called the collector junction. The base region is very thin, while the emitter region is thicker with a high impurity concentration. In PNP type transistors, the emitter region "emits" holes, whose movement direction is consistent with the current direction, so the emitter arrow points inward; in NPN type transistors, the emitter region "emits" free electrons, whose movement direction is opposite to the current direction, so the emitter arrow points outward. The direction of the emitter arrow is also the conduction direction of the PN junction under forward voltage. Both silicon and germanium bipolar transistors come in PNP and NPN types. Transistor package forms and pin identification: Common transistor packages fall into two major categories: metal packages and plastic packages. The pin arrangement follows certain rules. When placed in a bottom-view position such that the three pins form the vertices of an isosceles triangle, from left to right they are e, b, c. For small and medium-power plastic transistors, orient the flat side towards yourself with the three pins facing downwards; from left to right, they are e, b, c.

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