Practical use of resources


The resistance of the four rectifier diode, 500 r (load), oscilloscope, signal source

note: resistance does not need to be accurate, the resistance is used as a load, resistance can't be too big, too big words will limit the current to the small, may let the rectifier diode cutoff, diode welding time pay attention to the polarity, signal source to be able to produce more than plus or minus 2 v frequency 50 hz sinusoidal ac signal















OSC482S bring source used in the video module of plus or minus 2 v input sine wave as a diode bridge type circuit, through the oscilloscope was detected in two channels the endpoint voltage at the output, and channel subtraction shows the load on both ends of the rectifying waveform, in order to clearly see rectification results, we did not add filter capacitor in the video, once combined with capacitance output variable dc, we can try our


Video below

https://www.bilibili.com/video/BV1xA411b7A2



After practice questions: why is the input signal needs to be about more than plus or minus 2 v? In the video why not direct voltage waveform between measured load on both ends of AB, but respectively measured A, B voltage waveform and channel subtraction and complex voltage waveform between AB?