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  1. Eagle or KiCad. Now that you are about to order from ALLPCB, you can take a good look at their website. They have recommendations for free PCB CAD software: https://www.allpcb.com/software/
  2. Maybe you can try to apply a sponsorship for your project. I'm not afficiate with ALLPCB but I heard that they have a good program of Educational & Engineering PCB Sponsorship. They have always encouraged student engineers and professions around the world to innovate. You also can visit https://www.allpcb.com/sponsor.html to learn more.
  3. Could you tell me why I need to panelize my boards when PCB manufacturing?
  4. A tab route is used to create arrays, often called "route and retain". Tab routing lets you place more than one board (of either the same or different design) into a given area. This is typically for the convenience of the customer or for assembly requirements that utilize pick and place machines to load components. PCBs are then separated by breaking or cutting the tabs.
  5. Hello everyone, as an electronic enthusiast,i'd like to share some electronic knowledge. In the circuit, capacitors is to cut off the DC through alternating current, and it is commonly used in inter-stage coupling, filtering, decoupling, bypass and signal tuning. A. Filter capacitor is used in the power supply rectifier circuit to filter out the AC component. So that the output of the DC can be more smooth. B. Decoupling capacitors are used in the amplifier circuit to eliminate self-excitation to ensure the amplifier stable operation. C. Bypass capacitor is used in a re
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