CD4046 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.
- Phase-Locked Loop Tutorial, PLL
- Tutorial on Digital Phase-Locked Loops pdf
- Phase Locked Loop Basics pdf
- Optical obstacle switch – del50006
Read the pages above for building more Knowledge on PLL