Re: Topband: YCCC 9 circle preamp failure test

[чавдар левков <lz1aq@abv.bg>]

 Read  

 
http://www.lz1aq.signacor.com/docs/Wide_Mag_loop_prot_v1/wideband_mag_loop_protection.htm
 
  and look at Fig.5 and 6 diagrams. This is the
electric field intensity during nearby lightning strike – up to 50KV  
 [1/m] .  
 The voltage stress at the input capacitor is
extremely high. In our Hi-z amplifier we used 100 pF/1 KV capacitors at input 
and
also have discharging resistors of 1 Mohms. We never  
 had  
 a report
of damaged input. The stress from high power nearby TX is negligible. 

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   lz1aq@abv.bg  


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