"Switching power supply" is understood by the layman as a "switch"!
The word "power" is a bit general. On a business trip, I can't find a 220V AC outlet. You might say that there is no "power supply" in this hotel. In this context, "power" refers to the "AC input power" that can be used at the input of a power supply. On a business trip, you find that your laptop does not have a "power adapter", you will also get used to, with a computer, but without "power."
If someone asks what your occupation is, you say that you are doing "power" or answering "switching power", the other person may feel that your career is very general, not high-tech. But the power supply is high-tech in your heart, because you are doing a high-end power supply, no one can make it at the high end, and the person who asks you, the "power supply" in his mind is only 220V AC on the wall. , or a switch on the wall. You two are not on a channel.
The power supply seems too ordinary because it seems to be everywhere. In general terms, as long as the equipment and facilities that can provide electrical energy are power sources. In a narrow sense, the power source in the mind of the person who is doing the power supply is only the switching power supply. I want to talk about switching power supplies.
I did not search for the official definition of switching power supplies. In my understanding, the switching power supply is to realize the conversion of electric energy through the opening and closing of the switching tube. The transformation of electrical energy includes:
1, AC / DC. Converting AC to DC, usually converting 220V, two-phase AC or 380V, three-phase AC from the grid to DC. The AC input of the low-power AC/DC is 220V, and the high-power AC input is 380V. According to the application industry and occasions, it is also called AC/DC converter, rectifier, primary power supply, communication power supply, power adapter, lighting power supply, etc.
2, DC / DC. Convert DC to DC, for example, convert high voltage and small current into low voltage and large current. Depending on the application industry and occasion, it may be called DC/DC converter, secondary power supply, module power supply, on-board power supply, etc.
3, DC / AC. Converting DC to AC, depending on the application industry and occasion, may be called UPS, inverter, grid-connected inverter, motor controller, etc.
4, AC / AC. Transform AC into AC. The usual product form is the inverter for motor control.
The above four kinds of electric energy conversion are subdivided into many industries!
In the AC/DC, DC/DC two-direction industry market, the industry calls it “switching power supplyâ€. The specific industry has a relatively high-end primary power supply (also called communication power supply, but the meaning of communication power supply seems to be wider. ), generally refers to the 48V power supply for the telecommunications room, secondary power supply, custom power supply, power supply, computer power supply, notebook computer and other electrical equipment power adapter, mobile phone charger power supply, charging pile power supply, car charger (OBC, on-board charger), on-board DC/DC converter, lighting power supply (also can be divided into LED power supply, electronic ballast, HID power supply), and so on. And corresponding to the DC/AC, AC/AC industry market, people generally say that it is to do UPS, do photovoltaic (by photovoltaic panel DC to AC), do energy storage, do inverter, do motor control Of the device.
It is conceivable that there is a big commercial market behind the above four types of electric energy conversion!
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