Tag Archives: Demodulator

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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XR2211 Linear FM Detector

Posted on December 12, 2010 by Rend

This is a linear FM detector circuit. This circuit usually is used in telemetry applications and wide range of analog communications. The main part of this circuit is a XR-2211. This circuit has an external buffer/amplifier that is needed due … Continue reading →

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