Friday, March 16, 2012

Radio with LM1820 IC

LM1820 Radio
  • CA is 140 pF, 
  • CB is 60 pF, 
  • L1 has 110 and 5 turns for AM band, 
  • L2 has 98 and 12 turns for oscillator, 
  • T1 has 140 turns center tap and 2 turns, 
  • T2 has 142 turns and 7 turns, 
  • T3 has 142 turns center tap and 71 turns. 
  • IF value is 455 kHz. 
  • L3 has 3 turns on ferrite bead.

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