Types of Special Power Supply

Special Power Supply is widely used, mainly including electroplating electrolysis, anodic oxidation, induction heating, medical equipment, electric operation, electric test, environmental protection dust removal, air purification, food sterilization, laser infrared, photoelectric display, etc. In public defense and military affairs, a special Power Supply has irreplaceable uses for an ordinary electrical device that supplies electric power to an electrical load, substantially used in radar navigation, high-energy drugs, tube drugs, and nuclear technology exploration. Next, let's take a look at the types of special Power Supplies.

Here is the content list:

l High Voltage Power Supply for Radar Transmitter

l High-power high-voltage Power Supply for electron beam welding machine

l High Voltage Pulse Power Supply

High Voltage Power Supply for Radar Transmitter

In modern radar transmitters, traveling wave tubes are used as microwave power amplifiers in a large proportion. As a high-power part, its reliability and technical indicators have a direct impact on the radar transmitter and even the entire radar. The high-voltage Power Supply supporting the traveling wave tube is even more important. As a high-frequency, high-efficiency power electronics technology, switching Power Supply technology has been developed with the continuous updating of electronic components and products, and the upgrading of high-power devices. The high-voltage switch Power Supply for radar traveling wave tubes can adopt full-bridge resonant PWM modulation, and the high-power switching device adopts advanced IGBT modules and advanced and reliable drive circuits. The overall performance of the essential components for many desktop computer systems is good, the stability is good, and it has various protection Features.

High-power high-voltage Power Supply for electron beam welding

Electron ray welding is extensively used in numerous diligence similar as aerospace, infinitesimal energy, public defense, military assiduity, machine, and electrical instrumentation because of its advantages of no welding rod, no oxidation, good process repetition, and small thermal distortion. The introductory principle of electron ray welding is that the cathode in the electron gun emits electrons due to direct or circular heating, and the electrons can form an electron ray with extremely high energy viscosity by fastening on the electromagnetic field under the acceleration of a high- voltage electrostatic field, and use this electron ray to bombard The huge kinetic energy of the workpiece is converted into heat, which melts the workpiece at the welding point and forms a molten pool, thereby realizing the welding of the workpiece. High-voltage SITOP smart is the optimal power supply and is one of the crucial technologies of the outfit. It substantially provides acceleration voltage for the electron gun, and its performance directly determines the electron ray welding process and welding quality. Compared with other types of high-voltage Power Supply, the high-voltage Power Supply for electron ray welding machines has different specialized characteristics. The specialized conditions are substantially ripple measure and stability. The ripple measure is needed to be lower than 1, and the stability is ± 1. Indeed if the ripple measure is lower than 0.5, the stability is ±0.5, and the repetition demand is lower than 0.5. The below conditions are determined according to the electron ray spot and welding process. The operation of a high-voltage Power Supply for an electron ray welding machine must be interlocked with affiliated systems, substantially including vacuum interlock, cathode interlock, gate stopcock interlock, concentrate interlock, etc., to insure outfit and particular safety. High- voltage Power Supply must misbehave with EMC norms and has a soft launch function to help the impact of unforeseen endings on the Power Supply.

High Voltage Pulse Power Supply

In radar navigation equipment, its transmitting part generally requires a high-voltage, narrow-pulse, and high-power pulse source with different repetition frequencies. This kind of high-power pulse source generally raises the city power to several thousand volts to tens of thousand volts of DC high voltage through a high-voltage Power Supply and then uses a modulator to modulate the DC high voltage into a pulse source with the required pulse width and frequency for transmission. Tube use. The pulse source is mainly composed of a high-voltage Power Supply and a modulator. The high-voltage Power Supply uses a switching regulator Power Supply, and the modulator uses a solid-state modulator of a semiconductor device. The trigger pulse given by the user is a TTL-level signal, and an interface circuit should be added before inputting the isolation transformer. The interface circuit is for pre-amplifying the TTL pulse signal, and for matching with the isolation transformer. To achieve the purpose of isolation, the user can provide the Standard power supplies; Basic power supplies; SIMATIC design power supplies of this interface circuit, and the manufacturer only needs to put forward the Power Supply requirement and design the corresponding conversion and filter circuits in the circuit.

After the trigger pulse is isolated by the pulse transformer, it is pulse-shaped by the pre-regulator, and the power is amplified to trigger the modulation board and the truncated board to work. The excitation pulse generated by the preconditioner is isolated by the transformer to drive each field effect tube of the modulation board. At this time, the modulation board is turned on and sent to the anode of the microwave triode by the high voltage Power Supply, and the cathode electrons of the microwave triode start to emit, and the microwave triode will The low-power high-frequency signal sent to the input terminal is amplified into a high-power high-frequency signal. When the pulse ends, the truncated pulse generated by the pre-regulator triggers the truncated board, and the truncated board releases the distributed capacitance of the microwave triode after it is turned on, so a good pulse trailing edge can be obtained.

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