On 2020-04-27 11:06 p.m., Phil Kane wrote:
On 4/27/2020 11:03 AM, Fred Jensen wrote:
What was it with the FCC and the Colpitts oscillator schematic on the
exams in the 50's/early 60's? It was on my General ['54] and Extra
['56] exams, and practically everyone else I've asked says it was on
theirs too. There are other oscillator circuits of the day. Colpitts
uses capacitive feedback which is somewhat more stable than a Hartley
[snip]
They had to pick one of the two, and the rest was inertia.
Umm... there were three main oscillator types when I was first learning
electronics. Colpitts, Hartley, and Armstrong.
--
Cheers!
Kevin.
http://www.ve3syb.ca/ | "Nerds make the shiny things that
https://www.patreon.com/KevinCozens | distract the mouth-breathers, and
| that's why we're powerful"
Owner of Elecraft K2 #2172 |
#include <disclaimer/favourite> | --Chris Hardwick
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