• Tutorials ,
• Tags: circuit, modulation, on-off-keying, ook
• 30 Jan

Introduction: The “OOK modulation” or On Off Keying Modulation is very popular now days due to VLC or Visible Light Communication. OOK modulation is easy to use and easy to  implement. As we can even implement this modulation using simple 555 timer IC. In this post we are going to explain How to implement OOK

• Tutorials ,
• Tags: circuit, diagram, opamp, zcd, zero-cross-detector
• 30 Jan

Introduction It is very common problem to detect when an analog signal changes its value from positive to negative or vice versa. Zero cross detector is used to solve this kind of problems. Zero cross detector is Kind of Voltage comparators used to detect the change in waveform. Zero crossing is the cross of the