Básico composição e classificação de comutação alimentação circuitos;
1. Básico composição
The switching power supply is composed of main circuit, control circuit, detection circuit and auxiliary power supply.
1. Principal circuito
Inrush current limit: limit the inrush current on the input side when power on. Input filter: Its function is to filter the clutter existing in the grid and prevent the clutter generated by the machine from feeding back to the grid. Rectification and filtering: The AC power of the grid is directly rectified into a smoother DC. Inverter: convert the rectified direct current into high frequency alternating current, which is the core part of high frequency switching power supply. Output rectification and filtering: provide stable and reliable DC power supply according to load requirements. Minrong switching power supply spends a lot of energy on the main circuit. It can be said that Minrong switching power supply has the advantages of high efficiency, high safety, and low loss. These are inseparable from the contribution of the main circuit. Similarly, the high-quality main circuit of Minrong switching power supply is inseparable from the support of Minrong Electric's deep technology.
2. controle circuito
On the one hand, samples are taken from the output and compared with the set value, and then the inverter is controlled to change its pulse width or pulse frequency to stabilize the output. On the other hand, according to the data provided by the test circuit and identified by the protection circuit, a control circuit is provided to protect the power supply and take respective measures.
3. Detecção circuito
Vários parâmetros e instrument dados em operação são fornecidos em o proteção circuito.
4. Auxiliar alimentação fonte
Realize o software (remoto) start of the power supply, and supply power to the protection circuit and control circuit (PWM and other chips).
2. Principal categorias
In the field of switching power supply technology, people are developing related power electronic devices, such as 320W single group switching power supply.
Enquanto desenvolvendo comutando frequência conversão tecnologia, ambos produtos e tecnologias promover cada outra, promovendo o desenvolvimento de switching power supplies em a direção de luz, pequena, thin, baixa ruído, alta confiabilidade, e anti-interferência, com an anual crescimento taxa de mais do-duplo dígitos. Switching power supplies can be dividido em duas categorias: AC/DC and DC/DC.
Pequeno Baixo Energia Comutação Alimentação Fonte
Switching power supply is developing towards miniaturization and popularization. Switching power supplies will gradually replace transformers in many applications in life. The application of low-power micro-switching power supply must first be reflected in digital display meters, smart meters, mobile phone chargers, etc. At this stage, the country is vigorously promoting the construction of smart grids, and the requirements for electric energy meters have also been greatly improved. Switching power supplies will gradually replace the application of transformers in energy meters. Some types and models of Minrong Electric switching power supply have been developing in this direction. Minrong switching power supply is not only famous for its low loss, but also has the characteristics of high efficiency, safety, convenience and wide application. Its practicability in electric energy meters is very strong, and the giant position of Minrong switching power supply in the market has become more and more stable.
Invertido Série Comutação Alimentação Alimentação
A diferença entre o reverso série comutação alimentação e o geral série comutação alimentação é que a saída tensão de a reversa série comutação alimentação é negativa tensão, que é exatamente oposta à a positivo tensão polaridade de a geral série comutação alimentação alimentação. Desde a energia armazenamento indutor L apenas saídas corrente para a carga quando o switch K é desligado 2c em o mesmo condições, a saída voltage de o reverso série comutação alimentação é negativa, e a corrente é duas vezes as pequena as a saída corrente de a série comutação alimentação alimentação.
