Ok. I had to go out this morning.
I stopped by a used book store, I found two circuits, using the toroid in a
similar fashion to what I am working with.
What I found is "THE 1989 EDITION 'ARRL HANDBOOK'." ($2 bucks, what a buy,
huh?)

On pgs. 34-9 and 34-10 the similar circuits exist, I have placed them at:
http://blake.prohosting.com/mailguy2/swr1.jpg
and
http://blake.prohosting.com/mailguy2/swr2.jpg

This should prove as "proof of concept" that an "indicator" using such a
toroid should darn well work! ... at the very least--in the fashion I am
attempting...

swr1 is claimed to handle up to 150 watts, swr2 2KW!

So, now we should all be on the "same page" and, even those "high priests"
of ARRL should NOT be offended!!!!

If anyone is greatly interested in the text of construction
details/article--email me....

Warmest regards,
John

"John Smith" wrote in message
...
| This is a SWR bridge I built using leds and a homemade "directional
| coupler."
|
| ALL critiques on it, and ideas for improvements are welcomed!!!
|
| Please excuse my rough drawing, I am NOT a draftsperson!
|
| Hopefully, the attachment of the .jpg was successful....
|
| Warmest regards,
| John
|
|

John Smith wrote:
http://blake.prohosting.com/mailguy2/swr1.jpg
http://blake.prohosting.com/mailguy2/swr2.jpg

This should prove as "proof of concept" that an "indicator" using such a
toroid should darn well work! ... at the very least--in the fashion I am
attempting...

If you will notice, your earlier versions did not sample
the voltage. These designs sample the voltage through C1
and C2. The current is sampled by T1. The voltages are
phasor-added to the current to obtain signals proportional
to forward power and reflected power. Those voltage sampling
caps are what were missing from your earlier designs.
--
73, Cecil, http://www.qsl.net/w5dxp

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"Cecil Moore" wrote in message
...
John Smith wrote:
http://blake.prohosting.com/mailguy2/swr1.jpg
http://blake.prohosting.com/mailguy2/swr2.jpg

This should prove as "proof of concept" that an "indicator" using such a
toroid should darn well work! ... at the very least--in the fashion I
am
attempting...

If you will notice, your earlier versions did not sample
the voltage. These designs sample the voltage through C1
and C2. The current is sampled by T1. The voltages are
phasor-added to the current to obtain signals proportional
to forward power and reflected power. Those voltage sampling
caps are what were missing from your earlier designs.
--
73, Cecil, http://www.qsl.net/w5dxp

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Newsgroups
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CQ Amateur Radio magazine October 1997 "N7VE's One LED SWR Indicator".

73 Roger ZR3RC

Roger:

Isn't that a "resistive bridge" and consumes ~3/4 of the power? Or, am I
looking at the right design?

It just occured to me, because of your post, I didn't say "can be left
inline" for my design criteria--sorry, my mistake....

But, yes, that would be good enough, thanks for pointing that circuit out to
me.... my only problem, is other than a walkie-talkie, I have no rf souce
of that low of power (~4 watts or less)....

Warmest regards,
John

"Roger Conroy" wrote in message
...
|
| "Cecil Moore" wrote in message
| ...
| John Smith wrote:
| http://blake.prohosting.com/mailguy2/swr1.jpg
| http://blake.prohosting.com/mailguy2/swr2.jpg
|
| This should prove as "proof of concept" that an "indicator" using such
a
| toroid should darn well work! ... at the very least--in the fashion I
| am
| attempting...
|
| If you will notice, your earlier versions did not sample
| the voltage. These designs sample the voltage through C1
| and C2. The current is sampled by T1. The voltages are
| phasor-added to the current to obtain signals proportional
| to forward power and reflected power. Those voltage sampling
| caps are what were missing from your earlier designs.
| --
| 73, Cecil, http://www.qsl.net/w5dxp
|
| ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
| News==----
| http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+
| Newsgroups
| ----= East and West-Coast Server Farms - Total Privacy via Encryption
| =----
|
| CQ Amateur Radio magazine October 1997 "N7VE's One LED SWR Indicator".
|
| 73 Roger ZR3RC
|
|

Yes it seems to be best suited for a quick antenna check before turning up
the juice!
Sorry it doesn't meet your needs.
73
Roger


"John Smith" wrote in message
news
Roger:

Isn't that a "resistive bridge" and consumes ~3/4 of the power? Or, am I
looking at the right design?

It just occured to me, because of your post, I didn't say "can be left
inline" for my design criteria--sorry, my mistake....

But, yes, that would be good enough, thanks for pointing that circuit out
to
me.... my only problem, is other than a walkie-talkie, I have no rf souce
of that low of power (~4 watts or less)....

Warmest regards,
John

"Roger Conroy" wrote in message
...
|
| "Cecil Moore" wrote in message
| ...
| John Smith wrote:
| http://blake.prohosting.com/mailguy2/swr1.jpg
| http://blake.prohosting.com/mailguy2/swr2.jpg
|
| This should prove as "proof of concept" that an "indicator" using
such
a
| toroid should darn well work! ... at the very least--in the fashion
I
| am
| attempting...
|
| If you will notice, your earlier versions did not sample
| the voltage. These designs sample the voltage through C1
| and C2. The current is sampled by T1. The voltages are
| phasor-added to the current to obtain signals proportional
| to forward power and reflected power. Those voltage sampling
| caps are what were missing from your earlier designs.
| --
| 73, Cecil, http://www.qsl.net/w5dxp
|
| ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
| News==----
| http://www.newsfeeds.com The #1 Newsgroup Service in the World!
120,000+
| Newsgroups
| ----= East and West-Coast Server Farms - Total Privacy via Encryption
| =----
|
| CQ Amateur Radio magazine October 1997 "N7VE's One LED SWR Indicator".
|
| 73 Roger ZR3RC
|
|

Yes, I suspect that mine is relying on "stray capacatance" and it is not
sufficient--and--that is why I experience that "plunge into darkness" of the
REF LED at 1:1--and NOT a smooth adjustment and indication... (just
guessing)

Anyway, those capacitors are VERY small ~3pf, and as Cecil was so kind to
point out to me, in an email, a twisted pair of high-pot enameled wires
would, most likely, suffice--keeping with my "cheap and simple" design....
I can simply chuck another of my junkbox toroids in for the rf choke...

Warmest regards,
John

"Roger Conroy" wrote in message
...
|
| "Cecil Moore" wrote in message
| ...
| John Smith wrote:
| http://blake.prohosting.com/mailguy2/swr1.jpg
| http://blake.prohosting.com/mailguy2/swr2.jpg
|
| This should prove as "proof of concept" that an "indicator" using such
a
| toroid should darn well work! ... at the very least--in the fashion I
| am
| attempting...
|
| If you will notice, your earlier versions did not sample
| the voltage. These designs sample the voltage through C1
| and C2. The current is sampled by T1. The voltages are
| phasor-added to the current to obtain signals proportional
| to forward power and reflected power. Those voltage sampling
| caps are what were missing from your earlier designs.
| --
| 73, Cecil, http://www.qsl.net/w5dxp
|
| ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
| News==----
| http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+
| Newsgroups
| ----= East and West-Coast Server Farms - Total Privacy via Encryption
| =----
|
| CQ Amateur Radio magazine October 1997 "N7VE's One LED SWR Indicator".
|
| 73 Roger ZR3RC
|
|

Yes.
Well, take a look at this one, now this one just might deserve a patent....
http://blake.prohosting.com/mailguy2/john_s.jpg

Ya just think it might work--now this WOULD be simple!!! grin

Warmest regards,
John
--
I AM ONE-IN-A-MILLION!!!!!
Too bad the other 999,999 got there first.. frown


"Cecil Moore" wrote in message
...
| John Smith wrote:
| http://blake.prohosting.com/mailguy2/swr1.jpg
| http://blake.prohosting.com/mailguy2/swr2.jpg
|
| This should prove as "proof of concept" that an "indicator" using such a
| toroid should darn well work! ... at the very least--in the fashion I
am
| attempting...
|
| If you will notice, your earlier versions did not sample
| the voltage. These designs sample the voltage through C1
| and C2. The current is sampled by T1. The voltages are
| phasor-added to the current to obtain signals proportional
| to forward power and reflected power. Those voltage sampling
| caps are what were missing from your earlier designs.
| --
| 73, Cecil, http://www.qsl.net/w5dxp
|
| ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
News==----
| http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+
Newsgroups
| ----= East and West-Coast Server Farms - Total Privacy via Encryption
=----

John Smith wrote:
Well, take a look at this one, now this one just might deserve a patent....
http://blake.prohosting.com/mailguy2/john_s.jpg

Something like might work at a preset QRP level if you
can get enough turns on the toroid. What is the reverse
voltage rating on the LEDs? How about connecting coax
ground and logic ground on the schematic so Kirchhoff
will be happy?
--
73, Cecil http://www.qsl.net/w5dxp


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Cecil:

That is a "simplified drawing", no provision there is shown to "protect the
LEDs", especially from too high a reverse voltage--doesn't that just make
you think, "I know how to do that! grin"

Where is your "experimenters curriosity", haven't I given you enough to make
ya wanna build one?!!!

If you need a few parts, I got 'em... LOL!!!

Where is that "ham spirit", is this why there are so few hams here, and only
about ~20% of them join the "ARRL Church?", ahhh, I tell ya', faith in "God"
is dwindling... grin

Warmest regards,
John
--
I AM ONE-IN-A-MILLION!!!!!
Too bad the other 999,999 got there first.. frown

"Cecil Moore" wrote in message
...
| John Smith wrote:
| Well, take a look at this one, now this one just might deserve a
patent....
| http://blake.prohosting.com/mailguy2/john_s.jpg
|
| Something like might work at a preset QRP level if you
| can get enough turns on the toroid. What is the reverse
| voltage rating on the LEDs? How about connecting coax
| ground and logic ground on the schematic so Kirchhoff
| will be happy?
| --
| 73, Cecil http://www.qsl.net/w5dxp
|
|
| ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet
News==----
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