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“标准”答案还没出来?
2 }& s" _7 {! c7 C7 F记得LNK302的官方电路,整流电路前端也有这么一个大功率小阻值的电阻RF1,
8 n" Q5 _/ G$ [% \% v6 _& a5 j3 {! PResistor RF1 is a flame proof, fusible, wire wound resistor. It accomplishes several functions:
, L" x: Q4 w' l( s- V& x5 f a) Inrush current limitation to safe levels for rectifiers D3 and D4;
& Y2 h) V; _+ {1 d! ~ b) Differential mode noise attenuation;$ z+ e/ c2 S1 P( u6 _! b& c$ H9 O4 k; ^
c) Input fuse should any other component fail short-circuit (component fails safely open-circuit without emitting smoke, fire or incandescent material)., t8 b1 r6 t& e6 |
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