What Is a PLL?

Design Your Own Graphic Equalizer

Understanding Noise In Circuits



PLEASE follow the directions. I am not responsible if you screw this up and Baal or some other demon sucks you into the pits of Hell

You First need to build the circuit below and connect it to Line-in of Sound Card:

Like this

Then use this software to see the wave forms



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Building A Phase Lock Loop




This is a PLL or phase lock loop, it mainly consists of a VCO and phase comparators.
This is a component in FM demodulation and modulation.
It is used in a closed loop control to maintain a stable frequency.
The Circuit above is good for learning the full use of a small Dual Trace Scope.
The Circuit has both Analog and Digital areas and is a part of communication.

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