C for capacitance. R for resistance. CR for capacitive reactance circuit.
Alternating current can pass through the capacitor. When the capacitor is connected to the AC circuit, the charge on the capacitor plate has a hindering effect on the directional moving charge, which is called the capacitive reactance.
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Receive the PCB prototype from supplier. And see a CR mark on the board. What does it mean? Is it related to quality control?
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I am a project procurement. Recently, Our project is to develop a television. Of all the materials supply, PCB was the slowest one. And even our engineer took part in the discussion with PCB supplier to push them. Is it really hard to make a RF PCB?
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