dave wrote:

Wiki is the style of the reference. It doesn't really speak. Many things
oscillate when excited but they don't control anything. Is a quartz
crystal an active device?


No. It needs external gain, and an initial shock to start the
oscillation. That is usually supplied by the power up delay as the gain
block starts to function.


--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.