The shortwave tuner circuit with browband range in 5.8 ~ 10.5MHz

Published:2012/8/20 22:42:00 Author:Ecco | Keyword: shortwave tuner , browband range , 5.8 ~ 10.5MHz | From:SeekIC

This circuit uses BB113 three tunable diode to reach the indications and data with the ordinary variable capacitance shortwave tuner. The mixer stage uses silicon transistor BF324, and oscillator uses silicon transistor BF450.Main technical data: Operating voltage : 30VConsumption current : 20mATuning voltage : 0.5 ~ 30VCoil data : L1: antenna coupling coil 60Ω, 8 turns, 0.12mm copper enameled wire; L1 and L2 have 5mm interval; L2 : input loop, 26 turns, 12 × 0.05 copper stranded wire; L2 and L3 have 3mm interval; L3: high frequency coupling coil, 2 turns of 0.25mm copper enameled wire.



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