Common Switching Power Supplies and Precautions for Use

Switching power supply is one of the power chips. He is a very common power source. The reason for adding the word 'switch' is because its internal structure has a Schottky diode with switching characteristics. This type of diode has a high switching frequency and can be quickly cut off thousands of times in a short time. The output of power and current can be supplied every time, and this type of power plays an important role in general integrated circuits. The following is a brief analysis of common switching power supplies and usage specifications for your reference.

Switching power supply, also known as LED switching power supply, mainly includes:

1. Single group export switch power supply (export a set of voltages, which is also commonly used. The power of switch power supply is generally between 15W-400W)

2. Two sets of export switch power supplies (two sets of different voltages can be exported simultaneously)

3. Three sets of export switch power supplies (three sets of different voltages can be exported simultaneously)

4. Four sets of export switch power supplies (four sets of different voltages can be exported simultaneously, relatively less useful)

5. Small volume switching power supply (the casing volume is lower than that of the general S series switching power supply, and the parameters and characteristics are similar)

6. High power switching power supply (with a relatively high power, usually above 500W, mainly used in the industrial control industry)

7. Rainproof switch power supply (performance is the same as that of a single group of export switch power supply, but the shell is different. The holes on the shell are tilted, and it cannot be wet during precipitation and can be used outdoors)

8. Waterproof switch power supply (with a long shape, completely enclosed shell, moisture-proof and rainproof. As it is a completely enclosed shell, the heat dissipation effect is relatively poor)

9. Rail switch power supply (key feature is different installation methods, with plastic casing material installed on the rail)

According to the output voltage, the common ones are mainly 5V, 12V, 24V, followed by 9V, 15V, 36V, 48V, and so on.

Precautions for applying switching power supply:

1. Before using the power supply, first understand whether the output voltage specification is consistent with the nominal value of the commonly used power supply.

2. Before powering on, check if the output wires are connected correctly to avoid damaging the user's equipment.

3. Please ensure that the grounding terminal is reliably grounded to ensure the security of the application and reduce impact.

4. Please note that frequent power switches can affect its lifespan.

5. The working environment and load level can also affect its service life.

6. Check whether the installation is secure, whether the installation screws come into contact with the power board equipment, measure the insulation resistance of the casing, input, and output to prevent electric shock.

7. Multi output power supplies are generally divided into main output and auxiliary output, with main output characteristics superior to auxiliary output. Generally speaking, the dominant output is the one with a high output current. In order to ensure the output load regulation rate and output dynamic data, at least 10% of the load is required for each path. If the auxiliary road does not require a main road, the main road must add a moderate amount of false load. Actual reference to the corresponding model and specifications.

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