When it comes to the meaning of rotary switch, many professional explanations are not understandable to ordinary people, but it is often a very complex and professional thing. As long as we show it to you through examples in our life, everyone may understand what it means. In fact, anyone who has learned a little physics knows that from the working principle of this switch, we can basically guess what kind of use it can have in life. Let's start with. Briefly. I believe many people have used a flashlight. Although we can carry out lighting on our mobile phones now, we still often use this thing in the past. It has two switches, and the brightness intensity of each gear is different. This is because of the help of this switch.

If the two-stage flashlight is too old and many people don't know it, then the hair dryer should be very familiar. We use this thing whether we wash our hair at home or in a barber shop. Maybe no one doesn't know that it has two gears, one can use cold air and the other can use hot air, Moreover, many high-end ones can also have multiple such gears. The principle is that because the resistance used in each gear is different, it can provide me with different uses, and the thing that can adjust the resistance is the rotary switch. This is just a simple use. We will often see these two gear instruments in our life.

If it is more complicated, we often see an induction cooker. It is an electrical appliance, but it can have different uses. When we use it, we all know that it can adjust the temperature, that is, the voltage, so that we can choose the appropriate voltage according to what we want to do, Then an electric appliance can adjust the voltage to obtain the conversion resistance, so it is also a rotary switch. If we want to say more complicated, it is some advanced instruments. For example, generators in power stations need it, which we don't often contact.