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“标准”答案还没出来?
5 x. D8 B, G0 y% b4 ^- F( `5 s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,
- S2 q$ _, U5 ~$ EResistor RF1 is a flame proof, fusible, wire wound resistor. It accomplishes several functions:& B# U* I' p0 ?
a) Inrush current limitation to safe levels for rectifiers D3 and D4;; ?: v ~0 h& l, B! C: n/ C
b) Differential mode noise attenuation;
4 ^: L. T9 i4 q7 }$ k; d2 S8 p$ \ c) Input fuse should any other component fail short-circuit (component fails safely open-circuit without emitting smoke, fire or incandescent material).
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