外行請教﹕網絡變壓器的CORE選擇及其設計
哪位高手可以偉授網絡變壓器的設計和材料提供的信息﹖
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@yin
老师不敢,我也不太会,PLC方面的变压器我没有做过,不知道具体指标要求,我做过阻抗匹配和ADSL信号传输、回波抵消的变压器.你把你的参数要求说来听听,我看有没有相近可以参照的.
請看如下技朮要求﹕
dielectric strength: >5kv
transformer relation: 1:0.632
frequency operation band: 1 to 4MHz
return loss: >10dB@50ohms
insertion loss: <2dB
power w/o distortion: 2w
operation temperature: -25C to +55C
primary winding: 50ohm
secondary winding: 20ohm
application: HV side of a PLC system
core: can be E or Toroidal or you can recommend.
如下是我的大概計算﹕
次級電壓 return loss > 10dB = 10lg?
lg? = 1
? = 10
因此﹐輸出功率為10w
10w = u*u/r
10 = u*u/20
U = 22.36
dielectric strength: >5kv
transformer relation: 1:0.632
frequency operation band: 1 to 4MHz
return loss: >10dB@50ohms
insertion loss: <2dB
power w/o distortion: 2w
operation temperature: -25C to +55C
primary winding: 50ohm
secondary winding: 20ohm
application: HV side of a PLC system
core: can be E or Toroidal or you can recommend.
如下是我的大概計算﹕
次級電壓 return loss > 10dB = 10lg?
lg? = 1
? = 10
因此﹐輸出功率為10w
10w = u*u/r
10 = u*u/20
U = 22.36
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