++ Using a multimeter to determine capacitor quality++ Depending on the capacity of the electrolytic capacitor, the R×10, R×100, and R×1K ranges of the multimeter are usually selected for testing a
[i=s] This post was last edited by haojun on 2018-10-3 23:05 [/i] Things received, simple-simple test: a simple test environment was built as shown in the figurech1 is the input square wave, ch2 is th
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1. How to choose PCB material? Choosing PCB material must strike a balance between meeting design requirements and mass production and cost. Design requirements include electrical and mechanical parts
Hello everyone! There are two copper strips in the product, one is the positive pole and the other is the negative pole. If the copper strip is short-circuited, I want to know where the short circuit
The ideal operational amplifier has the characteristics of "virtual short" and "virtual disconnection", which are very useful for analyzing linear operational amplifier circuits. In order to ensure li