(1) First and foremost, consider the PCB size. If the PCB is too large, the printed lines become longer, increasing impedance and reducing noise resistance, while also boosting costs. Conversely, a PCB that is too small does not dissipate heat effectively and its adjacent lines are prone to interference. The shape of the circuit board is rectangular, with a length-to-width ratio of 3:2 or 4:3. Components located at the edges of the circuit board are generally not less than 2mm from the edge.
(2) When placing components, consider future焊接 and avoid excessive density.
(3) Center the layout around the core components of each functional circuit. Components should be arranged uniformly, neatly, and compactly on the PCB, minimizing and shortening the leads and connections between components. The decoupling capacitors should be as close as possible to the VCC of the devices. Aircraft Ground Power 2, 36V Aircraft Power 1, 400HZ Frequency Converter Power 7, 115/200V Power 2, 27V DC Power 5, 400HZ Power 12, Aircraft Power
(4) In high-frequency operating conditions, it's crucial to consider the distributed parameters between components. This is why circuits should ideally arrange components in parallel. Not only does this enhance aesthetics, but it also facilitates assembly and soldering, making mass production easier.
(5) By arranging the positions of various functional circuit units according to the circuit flow, the layout will facilitate signal flow, thereby ensuring the signals maintain as consistent a direction as possible.
(6) The primary principle in layout is to ensure the connectivity of wiring. When moving components, pay attention to the connections of flying leads, and place devices with wired connections together.
(7) Minimize loop area as much as possible to suppress the radiation interference from the variable frequency power supply.
