Schematic diagram of three-speed knob switch

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　　Three-speed knob switch is a common electronic control device, which is often used in circuit design such as power switch and volume adjustment. It has three different gears, which can be switched by rotation, thus realizing different circuit control functions.

　　

　　Schematic structure of second and third gear knob switch

　　

　　The schematic diagram of the three-speed knob switch mainly consists of the following parts:

　　

　　1. Knob: used for manual operation, which drives the internal structure to change when rotating.

　　

　　2. Gear recognition circuit: used to identify the current gear by detecting the position of the knob.

　　

　　3. Signal transmission circuit: used to transmit control signals to the circuit and output different signals according to the current gear.

　　

　　4. Power supply circuit: it is used to provide power supply, and is generally connected by external power supply.

　　

　　5. Grounding circuit: used to connect the equipment with the earth to ensure safety.

　　

　　Working mechanism of third gear knob switch

　　

　　1. Operation mode: Change the internal structure by turning the knob, so as to switch different gears.

　　

　　2. Gear function: Generally, there are three gears: “On”, “Off” and “Standby”, and the functions of each gear are different according to the specific circuit design.

　　

　　3. Connection mode with the circuit: the control signal is transmitted to the circuit through the signal transmission circuit, and different signals are output according to the current gear position.

　　

　　Application examples of fourth and third gear knob switch

　　

　　1. Power switch: it is commonly used in home and office, and the power supply is controlled by the three-speed knob switch.

　　

　　2. Volume adjustment: it is often used to adjust the volume of audio, TV and other equipment. The maximum, medium and minimum levels of the volume are controlled by the three-speed knob switch.

　　

　　3. Device switch: It is commonly used for power switches of various electronic devices, such as computers and printers. The power supply is controlled by a three-speed knob switch.

　　

　　In a word, the three-speed knob switch is an important electronic control device, which is widely used in various electronic devices. Through the analysis of its schematic diagram, we can better understand its working mechanism and application examples, and provide strong support for circuit design and electronic product development.