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A photon is an fundamental particle, a quantum of electromagnetic radiation. In quantum subject theory, it is the pressure provider that transmits the electromagnetic force.Light spots/spots are few and a ways betweenLight spot is the contact factor of mild contact skin, distinctive units have
2023/03/20 14:07
As early as 1983, a scientific paper posted by way of two scholars, Anderson and Parrish, proposed "selective photothermal decomposition". This is a very necessary thought for the improvement and software of laser in dermatology. In that paper, the writer delves into the idea of selective
2023/03/20 14:02
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
2023/03/20 13:42
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
2023/02/13 13:23
Technical Trends of Switching Power Supply AbroadSince the 1990s, the development of switching power supply has changed with each passing day. Many new fields and new requirements put forward newer and higher challenges to switching power supply. If we observe from the input and output window of a
2023/02/10 14:06
Source of electrical noiseNoise is generated when there is a rapid jump in the voltage or current waveform. In a switching power supply, many waveforms are periodic, that is, pulses containing high frequency edges repeat at a predictable pulse repetition rate (PRF). For a rectangular pulse train,
2023/02/09 13:27
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
2023/02/08 13:35
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
2023/02/07 14:54
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,
2023/02/06 13:07
Design and implementation of semiconductor laser power supplyIn order to improve the stability of the optical power output of the semiconductor laser and ensure the safe and reliable operation of the laser, the semiconductor laser power supply can be designed according to the following introduction
2023/02/03 11:42
Mode of operation of laserThe laser with different wavelength and different output mode will be absorbed by different tissues or substances after entering the skin and thus produce different action modes. These tissues or substances are called Chromophore.Photothermal action refers to the
2023/02/02 16:06
Selective photothermal decomposition(Selective Photothermolysis)As early as 1983, a scientific paper published by two scholars, Anderson and Parrish, proposed "selective photothermal decomposition". This is a very important concept for the development and application of laser in dermatology. In
2023/02/01 09:33
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