Windfreak Technologies
Exodus Advanced Communications Best in Class RF Amplifier SSPAs
 

About RF Cafe

Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024
Webmaster:
    Kirt Blattenberger,

    BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:

AirplanesAndRockets.com

Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes App Notes Calculators Education Engineering magazine articles Engineering software Engineering smorgasbord RF Cafe Archives RF Cascade Workbook 2018 RF Symbols for Visio - Word Advertising RF Cafe Homepage Thank you for visiting RF Cafe!
Exodus Advanced Communications Best in Class RF Amplifier SSPAs

Cornell-Dubilier Capacitor Ad: 2017 or 1947?

After looking at so many vintage electronics magazines, the differences in form factors of resistors, capacitors, inductors, amplifiers, and even hookup wire between then and now is very apparent. Physical sizes have shrunken significantly, and the packaging materials are noticeably more refined today. There were no surface mount devices, and nearly all components had either long leads for wrapping and soldering to posts or lugs, or they had lugs or posts to which said components leads - or hookup wire - was attached.

Seeing this canned capacitor advertisement from Cornell Dubilier in NASA Tech Briefs, made me do a double-take since it is reminiscent of capacitor packages of yore. For that matter, it could be a plug-in quartz crystal from a mid-last-century vacuum tube radio set. Of course the pilot's flight suit and airplane in the background confirm a present-day vintage.

 

 

Posted January 6, 2017

 

 

 

high frequency PCB of PCBONLINE
PCB Directory (Manufacturers)
Berkeley Nucleonics Webinar Buying Signal Generator - RF Cafe
 

Please Support RF Cafe by purchasing my  ridiculously low−priced products, all of which I created.

These Are Available for Free