In a superheterodyne radio, a local oscillator is an electronic circuit that generates a frequency based on the desired channel. The output of the oscillator is the channel frequency typically added ...

An oscillator that uses a quartz crystal to generate a frequency. Such devices generally output a fixed frequency, but some can be controlled by a tuning voltage over a small range. Contrast with VCO.

Download this article in PDF format. What’s the first thing you think of when selecting electronic components? Chances are it’s the processor or something else central to the system. The timing ...