The first wave is:
Energy-saving lamps working line voltage and lamp current waveform of the relationship, the red is the electrolytic capacitor across the voltage waveform, the yellow is the lamp current waveform!
Measuring instruments: oscilloscope Legislative Branch
The voltage probe connected to the electrolysis at both ends, the current probe set in the tube at one end, while watching the two waveforms.
We can see that: the lamp current to go along with line voltage, lamp current is the ratio of the peak and RMS is the crest, large fluctuations in line voltage, lamp current fluctuations are large, in order to reduce the lamp current fluctuations, which is the peak ratio , then we must reduce the line voltage fluctuations, that is, the ripple!inground lighting
Red voltage waveform rises, the electrolytic capacitors in the charge, decline in the discharge!
Oscilloscope can display the RMS lamp current, we have to adjust the lamp according to the RMS current!
Adjustable components are: the main thing is resonant inductor!
A discussion, no problems usually have time to continue!
More exciting in the behind! Predict how many wave back, stay tuned!
Circuit to the circuit, for example, in order to save time, I do not draw another circuit, the circuit similar energy-saving lamps! Special place to change some of my other paintings circuit!
The second wave is: start the moment, the impact of the input current waveform of the power line! We can see in the boot of the moment, the peak current than the normal work of the current many times larger!
Test Method: The scope of the current probe set in one of the end of the power cord, single trigger function, the measured instantaneous power current, the current boot to the electrolytic capacitor is the maximum charge current! The current value when used in doing the project, provided to the construction side, select the wire cross-sectional area as the reference data! Electrolytic capacitors can also be provided to manufacturers to make reference to conditions of use!Energy Saving Light Bulb
This is the start of the inductor in the lamp current waveform, you can ask questions! Started, the current value greatly reduced, which is the peak transistor current value, if the range of values over the safety of the transistor, the transistor will burn! Many engineers do not know, burn the transistor to transistor manufacturers blame the poor quality, wasted a three pipe manufacturers, manufacturers still burning for a transistor, transistor manufacturers silent resentment, who are still looking for their problems.