pcb抄板pcb设计基本步骤（Basic+steps+of+PCB+board+PCB+design）

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pcb 抄板 pcb 设计基本步骤(Basic steps of PCB board PCB design)
+ }( x# z% D6 I1 G0 lThe first step of PCB design: the initial work of PCB board circuit
board
1. Use schematic design tools to draw schematic diagram, and
' E4 V3 m7 S2 ~3 ~* y2 g$ M2 _$ ?generate the corresponding network table. Of course, some special
circumstances, such as the circuit board is relatively simple, have a
, E" t, @; g+ mdesign may not principle under the circumstance of network graph table,
# g: D6 P# a) r) wdirectly into the PCB system design, in the design of PCB system, can be
. D1 X; y: k3 V1 l) Y* @directly used parts package, artificially generated network table.
" d" R/ g3 Z' w. b: y9 Q$ q2, manually change the network table, some components on the fixed
foot, such as the principle of no pads on the definition of the network
0 d/ Z; ~. m9 m( C3 Kto communicate with it, without any physical connection can be defined
to the ground or protective ground. The pin names of some schematics and
% z& x  [4 ~! _9 ?% w* |- @( x" yinconsistent pin names in the PCB packaging library are changed into the
6 Q' c3 U2 v/ e+ dsame as those in the PCB packaging library, especially the two, triode
3 w0 a) W; ?4 c) q$ land so on.
4 L1 c: s4 t* }( U! c2 mPCB design steps two: draw their own definition of non-standard
components of the packaging Library
It is recommended to put all of the devices you have painted into
one of your own PCB library specific design files.  
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pcb抄板pcb设计基本步骤

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