Inverter power supply includes:
Electric power special inverter power supply
Communication special inverter power supply
Power type industrial frequency inverter power supply
Industrial sine wave inverter power supply
Square wave inverter power supply
Medical inverter power supply's role and characteristics
Most of the domestic medical equipment use 220V utility power supply. Due to the power supply needs of different types of medical equipment, the most used is the centralized power supply structure. That is, a centralized power converter to generate the required output voltage of various voltage levels. Due to its low cost, high efficiency, adjustable output voltage, low output noise, fast dynamic response, etc. is very suitable for medical equipment, medical equipment is currently the most used a power supply. Medical equipment power supply program to determine the need to consider the following issues.
Safety and isolation is a major difference between ordinary commercial power supplies and medical power supplies. Usually, in addition to some experimental analytical instruments, most of the medical equipment is installed near the hospital bed or operating table, the distance from the person and the operator is relatively close, the shell is often touched. Medical equipment has a variety of internal strong and weak components, if the isolation between strong and weak power or insulation problems with the shell material, it will be very dangerous. Safety testing in general medical equipment power supply must be UL60601-1, C-UL, EN60601-1 and other safety certification. Input and output must be more than 4,000V isolation voltage, and requires low leakage current to ground, in line with the safety regulations creepage distance requirements. For the strong part of the power need to use double insulation, especially with the possibility of contact with the equipment shell part of the more to strengthen the insulation design.
Electromagnetic compatibility and resistance to electromagnetic interference
To choose or build a good power supply system for medical equipment, we must pay attention to improve the electromagnetic compatibility of the power supply and resistance to electromagnetic interference. Mainly to consider the following aspects: design. PCB design and layout, the general power supply will contain some high-frequency signals, any printed line on the PCB can play the role of the antenna, the length and width of the printed line will affect its impedance and inductive impedance, thus affecting the frequency response, in time through the DC signal printed line will also be coupled from the adjacent printed line to the RF signal and cause circuit problems! So the medical class power supply must choose a big brand. So medical power supply must choose a big brand, with strong R & D strength of the company's products, these products in the design and production process can ensure good quality.