1、5 5 4 4 3 3 2 2 1 1 D D C C B B A A A B B A Title Size Document Number Rev Date: Sheet of Compon20110322-3RS485EMC 标准设计电路 A 11 Wednesday, October 26, 2011 Title Size Document Number Rev Date: Sheet of Compon20110322-3RS485EMC 标准设计电路 A 11 Wednesday, October 26, 2011 Title Size Document Number Rev Dat
2、e: Sheet of Compon20110322-3RS485EMC 标准设计电路 A 11 Wednesday, October 26, 2011 电话:钟凯 13632524150;0755-26532285 邮箱:kai.zhongcompon- 一站式电磁兼容(EMC)方案供应商 !需要器件联系 备注 1. 此电路为户外环境使用,具有较高的防护能力, 当使用环境变化时,可以适当的调整元器件参数; 2. 若设备外壳为塑胶外壳,则不需要进行共模防护; 3.R1 、R2 需要选用10R/2W 的电阻 4. 共模电感参数可根据测试结果来调整。 IEC61000-4-5 (1.25-8/20
3、uS) 差模:4KV (2ohm ),共模:6KV (12ohm ) = = ITU-TK.21 (10/700uS) 差模:8KV (40ohm ),共模:8KV (40ohm ) IEC61000-4-5 (1.25-8/20uS) 差模:4KV (2ohm ),共模:6KV (12ohm ) C1 100pF C1 100pF C1 100pF C1 100pF C2 100pF C2 100pF R2 10R/2W R2 10R/2W D4 BS0300N-C D4 BS0300N-C D3 TSS:BS0300N-C D3 TSS:BS0300N-C D3 TSS:BS0300N-C
4、 D3 TSS:BS0300N-C R2 10R/2W R2 10R/2W D4 BS0300N-C D4 BS0300N-C J1 CON10 J1 CON10 1 2 C2 100pF C2 100pF D2 B3D090L-C D2 B3D090L-C D5 BS0300N-C D5 BS0300N-C R1 10R/2w R1 10R/2w D5 BS0300N-C D5 BS0300N-C R1 10R/2w R1 10R/2w D1 BA301N D1 BA301N WCM-3216-222T WCM-3216-222T WCM-3216-222T D2 BA301N D2 BA301N J1 CON10 J1 CON10 1 2