Automobile AM radio circuit

Published:2012/8/20 22:29:00 Author:Ecco | Keyword: Automobile, AM radio | From:SeekIC

This circuit shows the high and mid part of car radio, and the medium wave band I is 520 ~ 950kHz, Poland II is 900 ~ 1640kHz. Loop tuning uses tunable diode BB113.Main coil data:L1: 122 turns; L2: 122 turns ; L3: 68 turns ; L5: 96 turns ( coupling coil with 7 turns ); L6: 64 turns ( coupling coil with 5 turns) . L1 ~ L6 use 8 × 0.03 copper.L7: 90 turns, 6 × 0.04 copper.L8: 120 turns ( coupling coil with 60 turns ), 8 × 0.03 copper.F: 95 turns ( coupling coil with 5 turns ), 8 × 0.04 copper.



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