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Monthly Archives: November 2009
Fast Pulse Detector
A schematic diagram of a fast pulse detector is show in the figure below. Error detection rate under 10% can be expected for 60 ns pulse. To get error free performance, it is recommended to use this circuit for detecting … Continue reading
PLL FM Demodulator
PLL (Phase Locked Loop) can be used to make a FM demodulator. PLL circuit track the input frequency by controlling a voltage input of a VCO (Voltage-Controlled Oscillator). Since the VCO is controlled to follow the input frequency, then the … Continue reading
Gamma Correction Circuit
Gamma correction need to be applied in video processing since the transfer function of video acquisition and video display is non linear. Here is the schematic diagram of a gamma circuit: If gamma value equal to 1, the the transfer … Continue reading
