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Circuit electronics Carrier Oscillator

February 24, 2010 · Posted in Radio · Comment 

Carrier oscillator is a crystal controlled oscillator using two numbers of BC548. The circuit does not use any coils or turned circuits. First BC548 is used as oscillator second BC548 is used as buffer. The carrier oscillator frequency is offset by 1.5 KHz above ladder filter (IF) frequency. The carrier oscillator frequency can be varied […]

Filter for Headphone AMP schema

February 18, 2011 · Posted in Audio Video · Comment 

3KHz Low Pass Filter for Headphone AMP schema using LM368, MF6-50 Headphone Amplifier Schematic I built a portable headphone amplifier for testing purposes. Each channel uses a single Burr-Brown LM368, MF6-50 opamp in inverting configuration. It has adequate current capability to drive most headphones without an output stage. I have used it with Sennheiser 465s […]

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