Tag Archives: Filter

Two Op-Amps 60 Hz Notch Filter

Posted on January 25, 2011 by Rust

Notch filter is a filter that remove a certain B. Ideally a notch filter will remove only single point of frequency  component, but practically it will remove a limited range of frequency spectrum. The spectrum should have very small bandwidth … Continue reading →

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Passive Audio Stereo-to-Surround Adapter

Posted on November 22, 2010 by Rust

Below is a passive surround converter/adapter circuit diagram. To make this circuit works, passive surround doesn’t required any active components. This circuit only need the combined of resistors and electrolytic capacitors. Do not use woofer or tweeter speakers for rear … Continue reading →

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Turbo Bass (Booster)

Posted on November 22, 2010 by Rend

This is a Turbo Bass circuit. Using this circuit, the low frequency sound signals(bass) can be multiplied. This circuit is an active circuit. The first op-amp is used to buffer the audio input signal. The signal will be filtered by … Continue reading →

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