A free monthly newsletter from the Home of some of the greatest electronics tutorials on the WWW
A free monthly newsletter from the Home of some of the greatest electronics tutorials on the WWW.




Hi Ian,

You are of course receiving this email because you elected to subscribe
to the Ian Purdie's Monthly Newsletter list at your preferred email address
shown above. Read it right through - definitely well worth it. This is
the brief mid-month edition.

Your first name is recorded as: Ian. This being your recorded preferred
name. You can change this!


2. My questions?

Have you seriously considered joining our Electronics "Questions and Answers
News Group"?

An excellent learning resource for lurkers. Last time I checked we had
jumped up to 222 subscribers and growing quite fast.


[Begin Shameless Promotion Bit]

The ARRL Handbook for Radio Amateurs - ARRL

This is the 78th edition of "THE standard reference book for hobbyists,
students, electronics technicians, radio amateurs and professional engineers".

1200 pages translate theory into practice through the large variety of
hands-on-projects packed into THE ARRL HANDBOOK. From Antennas to Zener
diodes, Transceivers to Switching Power Supplies, HF and VHF Propagation
to Power Amplifiers—it´s covered in this edition. Among the newest material
is a chapter on digital signal processing, a remote-controlled automatic
antenna switch and computer hardware.

Why do I personally highly recommend this book? This is the 78th edition
of THE standard reference book for radio amateurs, electronics technicians
and professional engineers - believe me, even if you are not especially
interested in radio frequency design you will learn a lot of basic principles
which are universal in electronics. I have a number of editions as far
back as 1943, everyone seriously interested in electronics should have
a copy - 1,200 pages! And you will write to me later and thank me for doing
us both a favour.

ORDER - U.S.A. - - The ARRL Handbook for Radio Amateurs - ARRL - a book I can highly recommended
to everyone with absolute confidence - ORDER NOW $US 32.00, usually ships
within 1-2 weeks.

Don't have an up-to-date copy? Don't have a copy at all? Buy one now!

[End Shameless Promotion Bit]


3. Projects in pipeline

Still adding pages as time permits.

Among the new pages is one again I have often been asked about.

This is ONLY an overview however there are a number of very comprehensive
resources provided. Hope it works out because receiving this newsletter
are a number of SMPS professionals who could really "burn" me.


My friend Dr. Paul Harden, NA5N who lives in the real world as a Radio
Astronomer is developing an exciting "D" class transcever project.

As Paul says - in part:

"Shoving a sinewave into a PA amplifier is lots of wasted power, particularly
with a MOSFET, since lots of power is used to charge the input capacitance
and drain inductance. You do this with a square wave, you end up with
less wasted power for higher efficiency. Besides, those cheap IRF510 type
mosfets are SWITCHING devices anyway, not biased for linear RF, so why
not use them as intended? But it is kinda neat to have a transmit mixer,
take the 100mV or so output and make 45-50Vpp (5W) with only
one active stage in between.

I think this will be a fantastic project. Again Paul has said:

I am developing this for a small vendor for a possible 30M transceiver
kit we'd like to introduce. I'm actively prototyping it right now and
still playing with it. But the deal I made is when done, I want the schematics
and my ability to write articles about it made public, which was agreed.
 So it's in some hot final development right now, and will be glad to share
it with you when it is finished. Probably within two months.

Seems to me a kit is in the wind.


4. What I'm personally up to - if you must know

Nothing exciting. Trying to answer email questions.


5. Industry News

The New GlobalSpec Site is Live!

"For the past 2 months, we've been telling you that our new site was coming.
We are excited to announce that the new site is now a reality. Our web
address is still the same ( http://www.GlobalSpec.com ). However, the layout
and navigation are cleaner and more intuitive. We still have the same high
quality search and find capabilities in a brand new package.

We encourage you to visit and see the changes we've made. Our growth in
2000 was phenomenal. As of the end of December, we have 17 million product
specs; 350,000 products; 3,700+ catalogs; 10,000+ contactable suppliers,
and 1,600 technical product areas.

This new site is the culmination of several months of careful market research
-- including focus groups, usability testing, engineer interviews -- and
user feedback. We are continually working to make our site and service
better for you".


6. Damn lies and "statistics"

This month appears to be a growth of 10% over December although this could
change given the quality of respected sites including me as a link.
typically see: http://www.spectrum.ieee.org/WEBONLY/websights/index.html


7. Feedback

Use this multi-purpose form


Go there and "tell-a-friend" about that subscription page by email.

8. Real COOL but FREE! downloads -

Nothing that can't wait until the end of the month.


9. Science News

William Hewlett, who helped launch the technology revolution out of his
garage (now a Californian historic site) died on Friday morning in his
sleep aged 87, the company said. Hewlett and David Packard, who died in
1996, founded their company in 1939 with $538. HP now has $50 billion in
annual sales. See http://welcome.hp.com/country/us/eng/welcome.htm

10. Humour (by ever popular demand) -

Funny Stories ......

A couple had been married for 25 years and also celebrated their 60th
birthdays. During the celebration a fairy appeared and said that
because they had been such a loving couple all those years, she would
give them one wish each.

The wife wanted to travel around the world. The fairy waved her wand
and boom! She had the tickets in her hand.

Next, it was the husband's turn. He paused for a moment, then said
shyly, "Well, I'd like to have a woman 30 years younger than me." The
fairy picked up her wand and boom! He was 90.


A husband and wife were at a party chatting with some friends when
the subject of marriage counseling came up. "Oh, we'll never need
that. My husband and I have a great relationship," the wife
explained. "He was a communications major in college and I majored
in theater arts. He communicates real well and I just act like I'm

Sampled from DailyComix.com, get more humor like this at:

AND - only because it's a New Year

Because I'm a man..................

Because I'm a man, when I lock my keys in the car I will fiddle with
a wire clothes hanger and ignore your suggestions that we call a road
service until long after hypothermia has set in.

Because I'm a man, when the car isn't running very well, I will pop
the hood and stare at the engine as if I know what I'm looking at. If
another man shows up, one of us will say to the other, "I used to be
able to fix these things, but now with all these computers and
everything, I wouldn't know where to start." We will then drink beer.

Because I'm a man, when I catch a cold I need someone to bring me soup
and take care of me while I lie in bed and moan. You NEVER get as sick
as I do, so for you this isn't an issue.

Because I'm a man, when one of our appliances stops working I will
insist on taking it apart, despite evidence that this will just cost
me twice as much once the repair person gets here and has to put it
back together.

Because I'm a man, I must hold the television remote control in my
hand while I watch TV. If the thing has been misplaced, I may miss
a whole show looking for it (though one time I was able to survive
by holding a calculator).

Because I'm a man, I don't think we're all that lost, and no, I don't
think we should stop and ask someone. Why would you listen to a
complete stranger -- I mean, how could he know where we're going?

Because I'm a man, there is no need to ask me what I'm thinking about.
The answer is always either sex or football, though I have to make up
something else when you ask, so don't.

Because I'm a man, I do not want to visit your mother, or have your
mother come visit us, or talk to her when she calls, or think about
her any more than I have to. Whatever you got her for mother's day
is okay, I don't need to see it. And don't forget to pick up
something for my Mom, too!

Because I'm a man, you don't have to ask me if I liked the movie.
Chances are, if you're crying at the end of it, I didn't like it.

Because I'm a man, yes, I have to turn up the radio when Bruce
Springsteen or The Doors comes on, and then, yes, I have to tell you
every single time about how Bruce had his picture on the cover of Time
and Newsweek the same day, or how Jim Morrison is buried in Paris and
everyone visits his grave. Please do not behave as if you do not find
this fascinating.

Because I'm a man, I think what you're wearing is fine. I thought what
you were wearing five minutes ago was fine, too. Either pair of shoes
is fine. With the belt or without it looks fine. Your hair is fine.
You look fine. Can we just go now?

Because I'm a man, and this is, after all, the 2000's, I will share
equally in the housework. You just do the laundry, the cooking, the
gardening, the cleaning, and the dishes. I'll do the rest.

This has been a public service message for women, to better understand
the Male animal.



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Ian C. Purdie VK2TIP,
138 "Bevington Village",
Sunrise Avenue

That's all folks
72/73's and oink

Ian Purdie Budgewoi N.S.W. Australia - Co-ords S33º14', E151º34'
VK2TIP "I'll give ya the TIP mate" QRP-L #1978. SOC #171 FP#91
URL - https://www.electronics-tutorials.com/

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the author Ian C. Purdie, VK2TIP of www.electronics-tutorials.com asserts the moral right to be identified as the author of this web site and all contents herein. Copyright © 2000 - 2001, all rights reserved. See copying and links. These electronic tutorials are provided for individual private use and the author assumes no liability whatsoever for the application, use, misuse, of any of these projects or electronics tutorials that may result in the direct or indirect damage or loss that comes from these projects or tutorials. All materials are provided for free private and public use.
Commercial use prohibited without prior written permission from www.electronics-tutorials.com.

Copyright © 2001, all rights reserved. URL - https://www.electronics-tutorials.com/newsletter/jan-mid-2001.htm

Updated 15th January, 2001