Category Archives: Signal Processing

50 kHz FM Optical Receiver

Posted on May 23, 2011 by Rust

Frequency modulation (FM) can be used to transmit analog voltage level signal with good noise immunity. The transmission itself  might employs different methods, and this circuit uses free air optical medium. This optical receiver circuit is built using a L14G2 … Continue reading →

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LM331 Frequency to Voltage Converter

Posted on May 11, 2011 by Rust

The frequency to voltage converter circuit illustrated in the schematic diagram below produces a 10 V output for 10 kHz full scale input (square waves or pulses).  The simplicity of the circuit doesn’t mean a bad performance: this circuit has … Continue reading →

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High-Impedance Input Hi-Fi Tone Control

Posted on April 21, 2011 by Rend

Tone control circuit is an electronic circuit which is designed to manipulate the tone of audio signal. Tone of audio signal is analog to color in light. We don’t call the tone of audio signal as red, green or or … Continue reading →

Posted in Audio and Music, Signal Processing | Tagged , | Comments Off
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