Dimmers are widely used in various lighting scenarios, such as homes, businesses, film and television stages, airports, museums, etc. When choosing a dimmer, the following factors need to be considered:
Compatibility: Ensure that the dimmer is compatible with the lighting fixtures used. Different types of lamps (such as incandescent lamps, halogen lamps, LED lamps) have different requirements for dimmers. For example, LED lighting fixtures typically require dimmers that support PWM or 0-10V dimming.
The commonly seen power adapters and mobile phone chargers are all constant voltage switching power supplies. The DC voltage output of the power adapter is fixed, and its voltage variation allows for a floating range of ± 5% of the output voltage. The output of the power adapter has overvoltage, overcurrent, short circuit, and power protection functions. Constant current power supplies are generally used in LED lights, and as the name suggests, their output is constant current power supply. The wall mounted power adapter is used as a constant voltage power supply, that is, the power adapter is within the rated output current range, that is, the working range The output voltage will always remain within the range of ± 5% of the rated voltage When the output current is greater than the rated current
The indicator light of a general power adapter only displays whether the power is working properly. If there is a flashing fault, there may be several reasons, which may be caused by internal instability. At this time, it is likely that the internal voltage is unstable. Or it could be poor contact with the socket, or it could be due to external voltage being too high or too low, or more likely due to external short circuit or overload causing repetitive starting. If the output is normal and only the indicator light is flashing, it may also be a problem with the display LED. These are the reasons that cause the power adapter light to flash. When troubleshooting, first we use a multimeter to check if the socket is functioning properly and if the power supply voltage is 22
