RIGOL Technologies (test equipment) - RF Cafe
Berkeley Nucleonics Academy RF Boot Camp - RF Cafe
 

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 tying 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!
Innovative Power Products Resistors

High speed diode - RF Cafe Forums

RF Cafe Forums closed its virtual doors in 2012 mainly due to other social media platforms dominating public commenting venues. RF Cafe Forums began sometime around August of 2003 and was quite well-attended for many years. By 2010, Facebook and Twitter were overwhelmingly dominating online personal interaction, and RF Cafe Forums activity dropped off precipitously. If the folks at phpBB would release a version with integrated sign-in from the major social media platforms, I would resurrect the RF Cafe Forums, but until then it is probably not worth the effort. Regardless, there are still lots of great posts in the archive that ware worth looking at.

Below are the old forum threads, including responses to the original posts.

-- Amateur Radio
-- Anecdotes, Gripes & Humor
-- Antennas
-- CAE, CAD, & Software
-- Circuits & Components
-- Employment & Interviews
-- Miscellany
-- Swap Shop
-- Systems
-- Test & Measurement
-- Webmaster

antenna_ant
Post subject: High speed diode Posted: Mon Aug 22, 2005 3:59 pm
Hi,

I am looking for a diode or a rectifier IC that works at frequencies in the range of 3mhz to 50mhz.
The regular 1N4001 are not at all useful and are designed to work in the hertz range ( around 50hz).


thanx.


Top

Guest
Post subject: DiodePosted: Mon Aug 22, 2005 8:07 pm
Hi!

Try a 1N914, 1N3600, or 1N4148 if you just need an ordinary signal diode.

That said, do you need something special, like a 1 Amp current rating or a 100 PIV or greater rating?

Good Luck!


Top

antenna_ant
Post subject: re: diodePosted: Mon Aug 22, 2005 8:16 pm
I don't need the 1A diode. Just high speed for now.
Do you know if the rectification is good. I used 1N4001 to rectify a 3mhz signal, it just cannot do it. There is no rectification at that frequency, the input appears across the output with some voltage drop.

I really need a diode, that does not allow -ve part of the signal thru. Not even that little spike when signal crosses zero to -ve area.


Top

Guest
Post subject: Diode selectionPosted: Tue Aug 23, 2005 7:37 pm
Every PN junction diode has a Trr specification - "Time for Reverse Recovery", which represents the time necessary to remove carriers from the junction area. If you want zero, or as little as possible, you're pushed toward Schottky Barrier diodes.

Unfortunately, the junction capacitance of Schottky Barrier diodes is higher than that of PN junction diodes - and that may be an issue for you as well.

That said, I've had good luck with Agilent (HP) SBD's such as the 1N5712 in that frequency range.

Good Luck!



Posted  11/12/2012
Copper Mountain Technologies - RF Cafe
ConductRF Precision RF VNA Test Cables - RF Cafe
 

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

These Are Available for Free