Correct use of regulated DC power supply - regulated dc power supply

The first step: power connection. Connect the regulated power supply to the electricity supply. Step 2: Turn on the power. When the load is not connected, press the main power switch, and then turn on the DC output switch of the power supply to make the power output work normally (some simple adjustable regulated power supplies have only the main power switch and no independent DC output switch). At this time, the current working voltage and output current are displayed on the digital indicator of the power supply. Step 3: Set the output voltage. By adjusting the voltage setting knob, the digital voltmeter displays the target voltage, and the voltage setting is completed. For the power supply with adjustable current limiting function, there are two sets of adjustment systems to adjust the voltage and current respectively. It must be clearly distinguished when adjusting. Generally, the potentiometer for adjusting the voltage has the word "VOLTAGE", and the potentiometer for adjusting the current has the word "CURRENT". Many entry-level products use low-cost coarse/fine dual-knob settings. In the case of dual-adjustment knobs, we first turn the fine-adjustment knob to the middle position, then set the approximate voltage through the coarse-adjustment knob, and then use the fine-adjustment knob. Accurate correction. Step 4: Set the current. Press the "Limit" button on the power panel and hold it down. At this time, the ammeter will display the current value.

Adjust the current knob to make the current value reach a predetermined level. Generally, the current limit can be set at 120% of the commonly used maximum current. Some power supplies do not have a dedicated adjustment key for current limiting. The user needs to short-circuit the output terminal according to the requirements of the manual, and then set the current-limiting level according to the short-circuit current with the current-limiting knob. The simple adjustable regulated power supply has no current setting function and no corresponding knob. Step 5: Set OVP for overvoltage protection. Overvoltage setting refers to further limiting an upper limit voltage within the adjustable voltage range of the power supply itself, so as to prevent the power supply from outputting excessively high voltage during misoperation. Generally, the overvoltage can be set to the level of 120% of the usual maximum working voltage. Overvoltage setting requires a flat-blade screwdriver to adjust the potentiometer recessed in the panel, which is also a design to prevent misoperation. When setting the OVP voltage, first adjust the operating voltage of the power supply to the target overvoltage point, and then slowly adjust the OVP potentiometer to make the power supply protection act exactly, and the OVP setting is now complete. Then, turn off the power, lower the operating voltage, and it will work normally. To set the working voltage, refer to the third step above. Different power settings have different OVP methods. The sixth step: communication interface parameter setting and remote control operation setting. For local control applications (panel operation), turn off the remote control operation. The communication interface should be set according to the communication requirements, and the local application does not need to be set. For the use of the regulated DC power supply, I will share with you here. The regulated DC power supply adopts the IGBT module adjustment mode. The specific characteristics of high efficiency, high precision and high stability are mainly used in scientific research institutions, laboratories and electronic products. It is used when high-efficiency power supply is required for testing.