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.
Devamını oku: PCB Tasarım ve Yerleşim Hizmetleri
#PCB Montajı
Bir PCB prototipi yapıyorum, Chip Quik'i kullanarak “SMDSWLF.031, Sn96.5/ Ag3.0/ Cu0.5 lehim 2.2% temiz olmayan akı. I find that the black spots appears frequently in larger pads on my board. I wonder if it is because I left the soldering iron more time heating the solder and that burnt the flux. What is that black residue? Is that a sign of a bad joint or maybe bad soldering technique?
I have a technical question about thermal management with mid-power LED diodes.Do you use thermal vias on the PC board anymore? Either under the LED diode footprint or even around the footprint?
Depends on the application limits and cost targets.
Montaj notunda şunlar belirtiliyor: Çıplak PCB'leri montajdan önce temiz ve iyi havalandırılan bir fırında 125*C'de pişirin. 24 saatler. Bu neden gerekli??
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