Electric Power Supply Units

Electric Power Supply Units

Electric power supply units, also known as power supplies or PSUs, are devices that convert the alternating current (AC) from a power source, such as a wall outlet, into direct current (DC) that can be used by electronic devices. These units are essential components of many electronic devices, including computers, televisions, and audio equipment. Power supplies typically consist of a transformer, rectifier, and voltage regulator. The transformer converts the AC voltage to a lower voltage, which is then rectified to DC voltage by the rectifier. The voltage regulator ensures that the output voltage remains stable and within a specified range, regardless of fluctuations in the input voltage. There are two main types of power supplies: linear and switching. Linear power supplies are simpler and less expensive, but are less efficient and generate more heat. Switching power supplies are more complex and expensive, but are more efficient and generate less heat. Switching power supplies are now the most commonly used type in electronic devices. Power supplies are rated by their maximum output power, which is measured in watts (W). The output voltage and current ratings are also important factors to consider when selecting a power supply for a particular device. It is important to choose a power supply that can provide enough power for the device, while also ensuring that the voltage and current ratings match the device's requirements.

transformer, rectifier, voltage regulator, linear, switching

— William Young

CITATION : "William Young. 'Electric Power Supply Units.' Design+Encyclopedia. https://design-encyclopedia.com/define/electric-power-supply-units?E=326577 (Accessed on October 14, 2026)"