Experienced friends, let's discuss this. In the design, we use a microphone, battery, and atomizing core. It's a simple design.
The battery voltage is 3.7V, the microphone no-load voltage is 3.5V, and the atomizing core resistance is 1.2 ohms. When working, the load voltage is 3V.
At this time, the current is 3/1.2=2.5A. The general microphone inhalation time is about 10 seconds, then it stops working.
So, the problem is: in the PCB design, when the normal current is 2.5A, due to the limited space on the circuit board, should the trace width and copper thickness be designed to a trace width of 1mm and copper thickness of 50um? I think that because it is not continuously powered, the current will be cut off after about 10 seconds and then powered on again after a few seconds. Is it necessary to have a trace width of 1mm and copper thickness of 50um? I'm not sure how to design this part.
If anyone knowledgeable can explain this, I would be very grateful!
Thank you so much!
