Programmable DC power supply is a new type of power supply device that integrates control circuit, power conversion circuit and switching voltage regulator circuit. It has the characteristics of high precision, strong stability and strong programmability.
It accurately adjusts the output voltage and current through digital control, and is widely used in scientific research, industrial production and communication.
When using a programmable DC power supply, follow the following steps
Connect the power supply: Connect the programmable DC power supply to the AC power outlet correctly and ensure that the power line is stable.
Set parameters: Set the required output voltage and current parameters through the control panel or software interface of the device. Adjust the output parameters to meet the experimental requirements according to the requirements of the device under test.
Connect the load: Use the output cable to connect the programmable DC power supply to the electronic device under test, and ensure that the connection is stable to avoid voltage drop.
Start the power supply: Press the start button to start the output voltage and current. During the operation of the device, the output parameters can be monitored and adjusted in real time.
Experiment and test: Observe the reaction and performance of the device under test, adjust the output voltage and current as needed, and ensure that the device works stably during the experiment.
Turn off the power: After the experiment or test is completed, turn off the programmable DC power supply in time and disconnect it from the device under test.
Programmable DC power supply failure and maintenance methods
Programmable DC power supply may encounter various failures during use. The following are some common failures and their maintenance methods:
No output voltage:
Check whether the power switch is turned on.
Check whether the input power supply is reliably connected to the input terminal.
Check whether the DC power supply is in overload protection state.
Unstable output voltage:
Check whether the input voltage is stable and adjust it to a reasonable range.
If there is interference voltage, consider connecting a TVS tube or a voltage regulator tube in parallel at the input end.
Check whether the load is overloaded or short-circuited, and adjust or replace the corresponding peripheral circuit.
Excessive output ripple noise:
Adjust or optimize the power supply design according to the specific situation, such as adding filter capacitors, etc.
Sudden power shutdown:
Check whether the display is on and confirm whether the power supply is working properly.
Check whether there is a spark in the input circuit of the power supply line or whether the load is overloaded or short-circuited, causing the input control switch to trip. If the switch trips, disconnect the load and wait for 1-2 minutes before trying to start the machine.
The output voltage fluctuates:
Check whether the DC power supply is overloaded and remove the excess load in time.
Check whether the input and output terminals are firmly and reliably connected to the wires.
The no-load voltage cannot rise or the output voltage cannot be adjusted under constant current:
Ensure that the "current regulation" is not adjusted to zero, and understand the concepts of "constant voltage" and "constant current", and adjust as needed.
Through reasonable use and timely maintenance, the programmable DC power supply can maintain its high accuracy and stability, providing reliable power support for scientific research, industrial production, communications and other fields.
In actual operation, the settings and operations should be strictly in accordance with the requirements of the instructions to ensure the safety and reliability of the equipment.
