Free Simple Circuit Diagram
In this peak detector circuit, D1 is the detector diode and D2 is a level shifting or compensating diode. A load resistor RL is connected to – 5V and an identical bias resistor, RB, is used to bias the compensating diode. This equal value resistors RL and RB make sure that the diode drops are equal. High values of RB […]
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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 100 ns or wider pulse. [Schematic diagram source: Linear Technology Application Notes]
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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 function is linear. Typical CRT usually have gamma factor from about 2.0 to 2.4 in their transfer function. The effect […]
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Pulse position modulation is similar to pulse width modulation, but the frequency is not constant. Like pulse width modulator circuit, pulse position modulator can be easily constructed using 555 IC. Here is the schematic diagram of the circuit: If you look at the output signal plot in the above timing chart, and compare it with our previous pulse width modulation, […]
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