analog circuit design 2025-09-26T13:00:40Z
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Rain lashed against the garage window as my oscilloscope's jagged lines mocked me – another failed attempt at designing a noise filter for my vintage synth restoration. Resistor bands blurred before my sleep-deprived eyes, each manual calculation of the cutoff frequency feeling like solving quadratic equations in quicksand. That's when I remembered the Reddit thread buried in my bookmarks: RL Filter Calculator. Downloading it felt like surrendering to digital heresy after years of graph paper ri