No one likes a flickering light source, but lighting usually depends on the quality of the building’s main AC power source. The light intensity is closely related to the power supply voltage, but the type of bulb also plays an important role. Incandescent bulbs and fluorescent bulbs will not stop emitting light at the moment of power failure, allowing their output to “glide” to some extent to cover up the inconsistency of power, but LED bulbs may be another matter. The inertia of the LED light output is very small, and the quality of the AC rectification and filtering of the main AC power supply and the bulb plays a great role in the stability of the LED bulb output.
[Tweepy] Want to measure and quantify this impact, and found a way Comes with an NPN phototransistor, a resistor, and a 3.5 mm audio plugThe phototransistor and resistor replace the microphone plugged into the audio jack of the Android phone, which is running audio oscilloscope and spectrum analyzer applications.The application is designed to process audio signals, but it is also suitable for [Tweepy]DIY photoelectric sensor.
The results are easy to interpret; the smoother the peaks the less the better. [Tweepy] I did some tests on different lighting solutions and found that the best performing one is a lighting panel for photography, which may not be surprising. The worst performers are ultra-cheap LED bulbs. Not bad for simple DIY sensors and existing mobile phone applications for audio.
Want to learn more about the ingredients in different LED bulbs and how they tick? We are at your service. Not all LED bulbs are the same. Some were stripped of their bones, some were stuffed with unexpected kindness.