Oscillator circuits are among the basic building block of amateur radio equipment. Oscillator circuits are not only used to generate the signals we transmit. Lock are likewise an integral component of receivers, such as the superheterodyne receiver.

You are watching: What are three oscillator circuits used in amateur radio equipment?

You can think of an oscillator as an amplifier through a tuned circuit at the input. This tuned circuit could be one LC circuit or a crystal. The values of the contents in the tuned circuit identify the output frequency of the oscillator. There room three types of oscillator circuits frequently used in Amateur Radio equipment – Colpitts, Hartley and also Pierce. (E7H01) Colpitts and also Hartley oscillator circuits are generally used in VFOs. (E7H06)

For a circuit to oscillate, it must have positive feedback v a get greater than 1. (E7H02) In a Hartley oscillator, confident feedback is supplied through a tapped coil.

*

(E7H03) In a Colpitts oscillator, hopeful feedback is supplied through a capacitive divider. (E7H04)

*

In a Pierce oscillator, hopeful feedback is supplied v a quartz crystal. (E7H05).

*

In addition to these an easy oscillators, there are a couple of other oscillator types that you have to know about for the Extra course test. A magnetron oscillator is a UHF or microwave oscillator consisting of a diode vacuum tube v a specially shame anode, surrounding by an exterior magnet. (E7H07) A Gunn diode oscillator is an oscillator based upon the negative resistance nature of properly-doped semiconductors. (E7H08)


Related posts:


Filed Under: Extra class Question of the Day

Reader Interactions


Comments


Leave a reply Cancel reply

Your email address will not be published. Required fields are marked *

Comment

Name *

Email *

Website


This site offers Akismet to reduce spam. Learn exactly how your comment data is processed.

Primary Sidebar


Search this website

You obtained mail!


Get my blog postsin your inbox every morning.
*
2020 variation of the No rash Extra class Study guide now available!

The new, updated variation of my Extra class study guide is accessible in PDF and also Kindle versions, and also "smart" speed cards.

Click below to get every one of my "No Nonsense" study guides and also "smart" flash cards

Also available: The CW Geek"s guide to having actually Fun with Morse Code


*

On January 10, 1946, the united state Army"s job Diana successfully bounced radio waves off the moon, shoot the opening salvo in the an are Race and giving bear to radar astronomy.

*


*
In place of face-to-face classes, I’m currently teaching digital amateur radio classes. The Tech course consists that four, two-hour Zoom meetings, while the General course consists of eight, two-hour Zoom meetings.

I currently don’t have any classes scheduled, yet if girlfriend would choose to know when future classes will take place, subscribe to the Tech course mailing list or subscribe come the General class mailing list.

See more: Draw The Intermediate And The Final Organic Product Of The Following Reaction.

If you have any type of questions about the classes, or amateur radio in general, you re welcome feel cost-free to email me directly.