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800_kHz_experimental_BF_oscillator_using_an_LM3909_chip

2016-08-05 08:26  
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800_kHz_experimental_BF_oscillator_using_an_LM3909_chip
800 kHz experimental BF oscillator using an LM3909 chip. Circuitry inside the dashed lines is the LM3909. The external coil is a standard broadcast loopstick. The variable capacitor is 360 pF (courtesy National Semiconductor Corporation).