AC and DC constant current power supply is a kind of power supply equipment that can provide constant current, which can provide stable current output under different load conditions. This power supply is widely used in the testing and commissioning of various electronic equipment and appliances. This article will introduce the characteristics, working principle, use method and maintenance of AC and DC constant current power supply, etc., to help readers better understand and use this power supply equipment.
1. The characteristics of AC and DC constant current power supply.
1.Constant current output: AC and DC constant current power supplies can provide stable constant current output, which is not affected by load changes.
2.High-precision control: AC and DC constant current power supply adopts advanced control technology, which can achieve high-precision current control, and the accuracy can generally reach 0Within 1%.
3.Wide load range: AC and DC constant current power supply has a wide load range and can adapt to a variety of different load conditions.
4.High reliability: AC and DC constant current power supply adopts high-quality components and strict production process, with high reliability and long life.
5.Versatility: AC and DC constant current power supply has a variety of functions, such as timing, trigger, remote control, etc., which can meet the needs of different users.
Second, the working principle of AC and DC constant current power supply.
The AC and DC constant current power supply adopts DC chopper technology to convert the input AC power into a stable DC output. It is mainly composed of rectifiers, filters, choppers and controllers. The rectifier converts the input alternating current into direct current, the filter filters out harmonics and noise, the chopper modulates the direct current, and the controller controls and adjusts the entire circuit to ensure the output of constant current.
3. How to use AC and DC constant current power supply.
1.Choose the right power supply: According to the different loads, choose the appropriate AC and DC constant current power supply to ensure that the load current is within the rated output current range of the power supply.
2.Connect the load: Connect the load to the output of the power supply, and be careful not to reverse the polarity.
3.Set the current value: Set the current value to the appropriate value as needed, which can generally be achieved by adjusting the duty cycle of the chopper.
4.Start the power supply: Turn the switch of the power supply to the "on" position to start the power supply.
5.Observe the current: Observe whether the output current of the power supply is consistent with the set value, and if there is a deviation, you can adjust the controller to correct it.
Fourth, AC and DC constant current power supply maintenance.
1.Regular inspection: Regularly check whether the input and output voltage, current and other parameters of the power supply are normal, and deal with them in time if there is any abnormality.
2.Keep it clean: Keep the power supply equipment clean and avoid dust, debris, etc. from entering the inside of the device.
3.Regular maintenance: Regularly maintain the power supply equipment, such as replacing the filter screen, cleaning the radiator, etc.
4.Avoid overload: Avoid overload operation of power supply equipment for a long time, so as not to cause damage to the equipment or shorten the service life.
5.Storage: When not in use, the power supply equipment should be stored in a dry, well-ventilated place to avoid humidity and high temperatures.
In short, AC and DC constant current power supply, as an important electronic device, has been widely used in various fields. Understanding and mastering its characteristics, working principles, usage methods and maintenance can help us better use and maintain this equipment, prolong its service life and improve work efficiency.