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A key query is how to make sure "fast enough", that is, what elements affect switching off the tube rapidly to keep away from the penalties of inductance saturation? This may also be the last determinant of the quantity and charge of the inductor, so it is vital to have a exact appreciation of the response time issue.1. All present day limiting loops require a positive time response.

Precautions for using laser and colored light◇ In the course of optical treatment, the operator should minimize the potential risks to the person present and the possible side effects to the customer◇ During the course of treatment, unauthorized persons are forbidden to enterAll reflective materials and inflammable materials should not be placed in the treatment room, such as mirrors and reflective glass objectsCarbon dioxide extinguisher should be placed in the room◇ Beauty care center should keep the fire outlet unblockedDoors should be kept closed and Windows should be covered with light -

Selection and use of semiconductor laser power supplyFirst, the basic requirements of semiconductor laser power supply1. Constant current output: short-circuit constant current output, load changes or short-circuit automatic adaptation.2. Output current ripple: ripple, noise and rated output current cannot exceed the maximum current that the laser tube can bear.3. Output voltage ripple: Ripple voltage noise will not damage the laser immediately, but if serious, it will affect the life of the laser.4. Soft start: Slow start current curve, no overshoot.5.

Design of a low power semiconductor laser driving power supplyWith the semiconductor in communication, measurement and control, medical, integrated optics and other technical fields of wide application, its attention is also increasing, for the design of a high precision, reliable performance, economic, durable driving power has become our current most urgent problem, because of the semiconductor laser "delicate" characteristics, the use of power must be in the performance and quality of strict control. Transfer characteristics of semiconductor lasersAt a certain temperature, wh

Switch power output protection policyIn all switching power supply designs, protection against load and protection against power supply due to load failure is a very important aspect to be considered in the design. In the design of military products, a kind of work called failure mode and impact analysis is often required. In this work, each part of the circuit is assumed to be an open circuit fault and then a short circuit fault. In this case, analyze separately how each fault will affect the rest of the circuit.

Classification of switching power suppliesSwitching power supplies can be divided into AC/DC and DC/DC. As a secondary power supply, DC/DC converter has realized modularization, and the design technology and production process have been mature and standardized at home and abroad, and has been recognized by users. However, due to its own characteristics, the primary power AC/DC has encountered more complex technical problems and manufacturing problems in the process of modularization.

How to use high voltage power supply to detect high voltage cablesTo ensure the normal and safe use of high-voltage cables, check the cable inlet before or after using them for a period of time. The test includes determining whether the main insulation is damp or aging, and checking whether there are defects in the main insulation of the cable after the voltage test. High voltage power supply is the main tool used for voltage resistance and insulation detection of cable.The source of Radium specially produced a power supply type for the high voltage test of power supply :HY-12KV and HY-32KV.

Various techniques for switching power supplies to reduce lossesThe efficiency of PWM switching power supply without special loss control technology is lower than that of switching power supply with loss control technology. For switching power supplies that have no problem with heat dissipation, such as some off-line power supplies, the efficiency may be satisfactory. But for portable power supplies and devices requiring small size, greater efficiency must be sought.

The basic principle of PWM switching power supplyAlthough pulse-width-modulated (PWM) switching power supplies have been around for a long time, they were not widely accepted and used until the mid-1970s. Switching power supplies have many advantages over linear power supplies.For the same power capacity, switching power supplies are more efficient and smaller than linear power supplies, but the design is more complex and electromagnetic interference (EMI) is more severe.There are two approaches to the current design of switching power supplies.

Influencing factors of inductance saturationA key question is how to ensure "fast enough", that is, what factors influence switching off the tube quickly to avoid the consequences of inductance saturation? This may be the ultimate determinant of the volume and price of the inductor, so it is important to have a good understanding of the response time issue.1. All current limiting loops require a certain time response.