Phenomenon 1: Whether there is voltage without current or current without voltage, the power supply is functioning normally in either case. Operators should check if their load is properly connected, if it's short-circuited or open-circuited, and if it meets the specifications, etc. In extreme cases, if the power supply has a voltage output (constant voltage state) and the load wire is broken, the output current naturally equals zero. Similarly, if the power supply has a current output (constant current state) and the load is short-circuited, the output voltage naturally equals zero. Aviation power supply 16, 36V; aviation power supply 2, 400Hz variable frequency power supply; 115/200V power supply.
Phenomenon 2: During voltage regulation, it was found that the no-load voltage could not be adjusted. Some operators prefer to turn the "current regulation" potentiometer all the way to the left, which prevents the power supply's no-load voltage from being adjusted as well. This indicates a lack of substantial understanding of "current regulation." Since the power supply still consumes a little bit of current even when it is unloaded, turning "current regulation" to zero prevents even a tiny current from flowing, thus the no-load voltage cannot be increased. Therefore, it is generally not advisable to turn the "current regulation" to zero (turning it to about a quarter of a turn to the right should prevent the above issue). General operation method: When using the voltage regulator as a stable voltage source, turn the current regulation knob fully clockwise and maintain it. Adjust the voltage regulation knob to control the output DC voltage value. When using the voltage regulator as a stable current source, turn the voltage regulation knob fully clockwise and maintain it. Adjust the current regulation knob to control the output DC current value. 400HZ power supply 8, aviation ground power supply 15, 27V DC power supply
Phenomenon 3: The power supply outputs both voltage and current, but when adjusting the voltage, it can't be increased anymore. Or, the power supply outputs both voltage and current, but when trying to increase the current further, it can't be amplified. This is due to the operator's unclear understanding of the "constant voltage" and "constant current" concepts. If the "constant voltage" indicator is lit, it means the power supply is operating in constant voltage mode (where voltage takes the lead), and the output current level is determined by the load, not by the operator's adjustment (where current is in a passive role). If you turn the "current adjustment" knob clockwise at this point, the current will not increase. However, if you turn the "voltage adjustment" knob clockwise, the output voltage will rise, and the output current will also increase accordingly (voltage is the main, current is secondary). Similarly, if the "constant current" indicator is lit, it indicates that the power supply is operating in constant current mode, and the output voltage is not "adjusted" but determined by the load. Only by adjusting the "current adjustment" knob can the output current change, and the output voltage will change accordingly (in this case, current is the main, voltage is secondary). In summary, it's important to understand the master-slave relationship. To change the voltage and current on the load, adjust the current when the power supply is in constant current mode and adjust the voltage when it's in constant voltage mode.
