AMPLIFIED CRYSTAL RADIO by LM386

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An improved crystal radio with a two-stage audio amplifier. The 2N3904 (or any other general-purpose NPN) acts as a preamplifier while the LM386 boosts the signal high enough to drive low impedance Walkman headphones or perhaps even a small speaker.

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This entry was posted on Friday, November 9th, 2007 at 9:54 pm and is filed under RF-Radio Frequency. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.