As we all know, the circuit board is not only an important electronic part, but also the support of electronic components and the carrier for electrical connection of electronic components.
The difference between frequency and amplitude:
Frequency is the number of vibrations during unit time, and Amplitude is the magnitude of the vibration.
Generally speaking, multimeter is used to measure the resistance of passive and active components, which is quite helpful to check the short circuit on a PCB board.
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