Knowledge and experience sharing of adjustable components of regulated power supply.
As an important part of electronic equipment, the main function of regulated power supply is to provide stable and reliable voltage for circuits. In practical applications, one of the key features of the regulated power supply is the adjustability of the power supply, which allows the user to adjust the output voltage according to the needs of the equipment to meet different operating conditions. Below, we will delve into the adjustable composition of the regulated power supply and its working principle.
First, the basic composition of the regulated power supply.
The regulated power supply is mainly composed of the following parts:
Transformer: Used to convert the input AC voltage to the desired AC voltage value.
Rectifier circuit: converts alternating current into direct current, and commonly used rectifier circuits include bridge rectifier and half-wave rectifier.
Filtering circuit: Filters out the pulsating components of the rectified DC to make the output smoother.
Voltage regulator circuit: Through the negative feedback mechanism, the output voltage is stably controlled to ensure that the output voltage is not affected by the input voltage and load changes.
2. Adjustable composition of regulated power supply.
In order to achieve the adjustability of the output voltage, the regulated power supply usually incorporates adjustable components and a control system.
Adjustable components: such as variable resistors, potentiometers, etc., users can change the size of the output voltage by adjusting these components.
Control system: Modern regulated power supply usually adopts a digital or analog control system, which automatically adjusts the output by detecting the output voltage and comparing it with the reference voltage to maintain the stability of the output voltage.
3. The adjustable working principle of the regulated power supply.
When the user needs to adjust the output voltage, the control system detects the change in the output voltage and compares it with the preset reference voltage. If the output voltage is lower than the reference voltage, the control system will issue a command to increase the output power of the power supply, thereby increasing the output voltage; Conversely, if the output voltage is higher than the reference voltage, the control system will reduce the output power of the power supply and reduce the output voltage. Through this negative feedback mechanism, the regulated power supply can achieve precise control of the output voltage.
4. Suggestions for use and maintenance.
Reasonable selection of regulated power supply: According to the working voltage and current requirements of the equipment, select the appropriate regulated power supply to avoid overload or underload.
Regular inspection: Regularly check the regulated power supply, including input voltage, output voltage, filter capacitor, etc., to ensure that it is in good working condition.
Cleaning and maintenance: Regularly clean the housing and heat sink of the regulated power supply to ensure good heat dissipation and prevent performance degradation or damage caused by overheating.
Avoid interference: Try to place the regulated power supply away from strong electromagnetic interference to reduce the impact on the output voltage.
Through the above sharing, we hope to help you have a deeper understanding of the adjustable composition and working principle of the regulated power supply, and provide a useful reference for the selection, use and maintenance in practical applications.