Outdoor power supply voltage adjustment

Does an AC-DC power supply have an output voltage adjustment?

AC-DC power supplies and DC-DC converters often feature an output voltage adjustment, the range of which is stated in the datasheet. An AC-DC power supply may have a potentiometer accessible to set the output voltage from the original factory set point. (See Figure 1).

What is PSU input voltage?

The PSU input voltage refers to the electrical voltage that is required to operate the Power Supply Unit effectively. The PSU acts as the intermediary between the AC power supply and the DC power needed to power your devices. Typically, the input voltage for most PSUs is set to the standard voltage of the region where it is designed to be used.

Why do I need to adjust my PSU input voltage?

Moving to a Different Country: If you are relocating to a different country or traveling to a region with a different voltage standard, you will need to adjust the PSU input voltage to match the local electrical system. This ensures that your PSU can effectively convert the incoming AC power into the appropriate DC voltage required by your devices.

How do I stabilize the output voltage?

The stabilization of the output voltage is done using a TL431. This is a shunt regulator with a refence voltage and an input pin to adjust the output voltage. The data sheet of this device can be found on the internet. I located the resistors that are responsible to set the output voltage. They are named R10 and R14 on the pcb.

Can a power supply be adapted on-the-fly?

Power supplies are usually set to a fixed output voltage to supply an electrical load with energy. Certain applications, however, require a variable generated voltage. This article will show how output voltages of a power supply may be adapted on-the-fly using dedicated digital-to-analog converters (DACs) developed for such purposes.

How do you adjust a PSU voltage?

Adjust the Voltage: Insert the screwdriver into the adjustment area and gently rotate it according to the manufacturer’s instructions. Some PSUs may have a switch that must be toggled, while others may require you to rotate a dial to reach the desired voltage setting.