A regulated power supply is a common power supply device, mainly used to maintain the stability of the output voltage. It can output the input voltage stably from instantaneous changes, ensuring that the electrical components in the circuit will not be damaged by voltage fluctuations. The accuracy of a regulated power supply refers to the deviation between its output voltage and the expected value, also known as output error. Generally, the accuracy of a regulated power supply can be described by the following two indicators.
1. Static accuracy Static accuracy refers to the deviation between the output voltage and the expected value in a steady state. This deviation is usually controlled by the power supply's feedback loop to keep the output voltage in line with the desired value. Static accuracy is also known as steady-state accuracy and is usually expressed in percent or millivolts. Generally, the static accuracy of the regulated power supply should be less than or equal to 1% of the output voltage. For example, if the expected output voltage of the regulated power supply is 5 volts, its static accuracy should be less than or equal to 50 millivolts. Only in this way can the stability and reliability of the output voltage be ensured.
2. Dynamic accuracy Dynamic accuracy refers to the deviation between the output voltage and the expected value under instantaneous changes. This deviation is usually controlled by the response speed and stability of the power supply. The response speed of the regulated power supply is very important, because it needs to respond quickly to the instantaneous change of the input voltage, so as not to affect the working efficiency of the electrical appliances. Therefore, the dynamic accuracy of the regulated power supply should generally be less than or equal to 5% of the output voltage. In short, the accuracy of the regulated power supply is very critical, it directly affects the performance and reliability of the circuit. When purchasing a regulated power supply, it is necessary to select an appropriate accuracy according to actual needs to ensure the stability and reliability of the circuit.
