In general, the value of the required DC voltage differs greatly from the effective value of the mains voltage, so it is necessary to reduce the voltage through the DC-DC adapter before the AC voltage is processed. The effective value of the transformer secondary voltage depends on the needs of the subsequent circuit.
What is the selection method of the DC-DC adapter?
What are the categories of DC-DC adapters?
What is the scope of application for the DC-DC adapter?
What is the selection method of the DC-DC adapter?
During the maintenance process of the optional DC-DC adapter, maintenance is even more difficult because the current DC-DC adapter uses a large number of SMD components once the component fails. The power supply's performance is also increasing day by day, which poses more and more challenges to the electronic components. If the quality of the electronic components used in the power supply is not good enough and the PCB wiring is improper, the probability of failure is likely to increase. Therefore, buying a high-quality power supply for the stability of the notebook is very helpful.
Check if there is a problem with capacitor, resistor, and inductance. If it turns out that the capacitor is full, it is best to replace it in time to avoid hidden dangers.
What are the categories of DC-DC adapters?
Linear power supplies
Linear power supplies are used when precise control and noise reduction are most important. Although they are not the most efficient power supplies, they offer the best performance. The name comes from the fact that they do not use switches to regulate the output voltage.
Linear power supplies have been around for years, they are widely used and reliable. They are also relatively quiet and commercially available. The disadvantage of linear power supplies is that they require larger components and are therefore larger and emit more heat than switching power supplies. They are also less efficient than switching power supplies and batteries, and sometimes have only 50% efficiency.
Switching power supplies
Switching power supplies (SMPS) are more complex in design, but offer greater versatility in polarity and can achieve efficiencies of 80% or more when properly designed. Although they have more components, they are smaller and cheaper than linear power supplies.
What is the scope of application for the DC-DC adapter?
Laptops and household appliances, as well as electronic devices such as audio and video devices, come with their own mobile power supply, so you can operate them with a DC-DC adapter and home circuits. The transformers and diodes in the power supply are necessary to protect the sophisticated electronic circuits in these devices, and power outages, which are very common, can prevent them from functioning. There is no standard input voltage for all devices, so it is an easy way to have a universal power supply at hand to reuse it in case of power failure.
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