Conventional use of DC regulated power supply
The use of the DC adjustable regulated power supply is relatively simple, and the main operation is to set the power supply accordingly.
The first step is the power connection. Connect the regulated power supply to the mains.
The second step is to turn on the power. When the load is not connected, press the main power switch (power), and then turn on the DC output switch (output) of the power supply to make the power output work normally (some simple adjustable regulated power supplies only have the main power switch, 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.
The third step is to set the output voltage. By adjusting the voltage setting knob, the digital voltmeter displays the target voltage to complete the voltage setting. For power supplies with adjustable current limiting, there are two regulation systems that regulate voltage and current respectively. When adjusting, it is necessary to distinguish clearly. Generally, the potentiometer that adjusts the voltage has the word "VOLTAGE", and the potentiometer that adjusts the current has the word "CURRENT". Many entry-level products use low-cost coarse/fine adjustment knob settings. When encountering dual adjustment knobs, we first turn the fine adjustment knob to the middle position, and then use the coarse adjustment knob to set the approximate voltage, and then use the fine adjustment knob. Precise correction.
The fourth step is to set the current. Press and hold the “Limit” key on the power panel, the ammeter will display the current value, adjust the current knob to make the current value reach the predetermined level.
The general current limit can be set at 120% of the commonly used maximum current. Some power supplies do not have special adjustment keys for current limiting. Users need to short-circuit the output terminals according to the instructions, and then set the current-limiting level according to the short-circuit current and the current-limiting knob. The simple adjustable regulated power supply has no current setting function and no corresponding knob.
The fifth step is to set the overvoltage protection OVP. 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 excessive voltage during misoperation.
Typically, overvoltage can be set to a level of 120% of the usual maximum operating 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 working voltage of the power supply to the target overvoltage point, and then slowly adjust the OVP potentiometer to make the power protection act just right, and the OVP setting is completed at this time. Then, turn off the power, lower the working 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 is the setting of communication interface parameters and remote control operation. 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.
