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  1. C

    LED Audio Spectrum Analyzer

    Hello guys I'm trying to replicate this project https://makezine.com/projects/audio-spectrum-analyzer/ since I have quite a few LM324 laying around gathering dust. I've trying simulating it first via multisim before actually building and I keep getting an error. This is how one of the...
  2. I

    50 Hz oscillator based on a LM324N IC

    hello everyone I want to build a 50 Hz oscillator circuit using the LM324N IC, any body have a schematics to how and what components I'm gonna need ? thanks

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