Diferença entre switch mode power supply and linear power supply
Sobre poder tecnologia desenvolvimento
A direção de desenvolvimento de moderno potência eletrônica tecnologia é para mudar de tradicional potência eletrônica, que é baseada em baixa-frequência tecnologia para lidar com problemas, para moderno potência eletrônica, que é baseada em alta frequência tecnologia para lidar com problemas. E em a aplicação de potência eletrônica tecnologia e a variedade de potência sistemas, switching power supply technology estão em o core posição.
A diferença entre switching power supply e linear power supply
Simplesmente put, linear power supply voltage regulation can be regarded as ajusting the resistance value, which is equivalent to adjusting the sliding varistor to make the voltage change, while the switching power supply is to make the voltage change by adjusting the frequency of the switch. At the same time, switching power supply and linear power supply, compared to the cost of both with the increase in output power and crescimento, mas o dois crescimento taxa é diferente.
1, linear power supply cost at a certain output power point, but higher than the switching power supply.
Portanto, com o desenvolvimento de potência eletrônica tecnologia e inovação, so que o comutação energia fornecimento tecnologia continua para avanços e inovações, este a custo questão, mas let o switching power supply tecnologia para o baixo saída potência fim de o movimento, para o switching power supply to provide a wide range of development space.
2, Power Electronic Equipment and people's work, Life is Increasingly Close, and Electronic Equipment are Inseparable from A Reliable Power Supply, Into The 80'S after The Computer Fully Realizeized Switching Power Supply, To The 90'S Switching Power Supply Successly Into A Variety of Electronic and Electrical fields.
Entre o curto dez anos, switching power supply technology to rapidly occupy the core position of power electronic equipment, is it only porque de o pequeno tamanho de o switching power supply?
3, in fact, from the schematic diagram of the switching power supply can be understood: it does not use the bulky industrial frequency transformer, at the same time because the adjustment tube on the dissipation of power is greatly reduced, thus eliminating the need for larger heat sinks. This makes the switching power supply becomes smaller and lighter. However, the biggest advantage of switching power supply is - low power consumption and high efficiency. In the switching power supply circuit, the transistor in the excitation signal, it constantly repeats the 'on' 'as of' switching state, the conversion speed is very fast, the frequency in 50HZ only, making the power supply efficiency greatly improved.
4, switching power supply voltage regulator wide range. The output voltage from the switching power supply is the duty cycle of the excitation signal to regulate, the input signal signal voltage change can be compensated by frequency or width adjustment. In this way, in the industrial frequency grid voltage changes are large, it can still ensure a more stable output voltage.
5, switching power supply operating frequency is basically working at 50kHz, is a linear regulated power supply 1000 times, which makes the rectifier filtering efficiency almost 1000 times; even with half-wave rectification with capacitor filtering, the efficiency is also increased by 500 times. In the same ripple output voltage, the use of switching power supply, the capacity of the filter capacitor is only linear regulated power Fonte Filtro Capacitor 1/500 ~ 1/1000.
