How to choose a more cost-effective power supply? (I)

In general, all electronic devices need to be powered to work properly, and for power supplies, devices that provide power to electronic devices. According to the nature of the power supply, the power can be divided into two categories: AC power and DC power.

AC regulated power supply and DC regulated power supply:

AC regulated power supply

Parameter adjustment (resonance) type; auto-coupling (variable ratio) adjustment type; switching type AC regulated power supply.

2. DC regulated power supply

DC stabilized power supplies can be divided into chemical power supplies, linear stable power supplies and switch-type stable power supplies.

So how to choose? Need to know the following:

1, the output type

The power supply is the most commonly used instrument for electronic engineers. To select the power supply, you first need to select the type of power supply: DC power supply, AC power supply, variable frequency power supply, and special high voltage power supply.

2, the output voltage

The range of voltages that the power supply can output. At the same time, you need to choose whether you need constant voltage output and over voltage protection.

3, the output current

The range of current that the power supply can output. At the same time, you need to choose whether you need constant current output and overcurrent protection.

4, output power

The maximum power that can be output when the power supply is fully loaded.

5, the number of channels

Number of ways to output the power supply interface.