Here’s a nostalgic vibe of an awesome analog chip from the 1990s era that’s still making an impact in audio designs.

To understand the difference between DC and AC, consider the flow of electrons in a wire. In a DC circuit, electrons move in one direction and keep rotating in the circuit.

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At the same time, the dc component of the isolated analog waveform sourced to R4 varies from 0.25 to 0.0 V relative to A1-pin 3. A1’s low-pass, gain-of-four filter extracts this dc portion and ...

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Notes for a lecture. Contribute to mckinlde/NSC-electronics development by creating an account on GitHub.

The electrons flow back and forth periodically in the AC, while in the DC they only flow in one direction. This is why they’re called alternating current and direct current respectively.