FREE electronic circuits download

[Thomas Scarborough]

With gratitude for the strong interest there has been in the first five
books of my new series, I am persuaded, in addition to BOOK 1, to give away
BOOK 6 as a FREE download @ http://stores.lulu.com/thomasscarborough (or
printed at a mere $6.95). I consider that BOOK 6 contains some of my best
designs (FREE does not mean a reduction in value). BOOK 6 again includes
five designs using just 6 components, or less: a TENS Unit (for pain
control, and other purposes), a BB Metal Detector (much more sensitive than
BFO), a Diode Pump, a Free Energy Flasher (this actually flashes off "thin
air"), and an Auto Power-Down circuit -- with many "further suggestions".
But now that I have offered the download free, imagine the smell of fresh
paper in your hands ... to touch and handle the pages ... to take in the
deep colours of the cover ... to turn its gloss in the light ... not to
speak of the usefulness of having a printed copy in front of you ... for a
mere $6.95!

 

[Ernie Werbel]

Look, nobody was interested the first time you posted or else there would
have been numerous responses saying how great your book is. So go bother
some other newsgroup with your spam.

Ernie


"Thomas Scarborough" <scarboro@iafrica.com> wrote in message
news:1176759677.86085@vasbyt.isdsl.net...

With gratitude for the strong interest there has been in the first five
books of my new series, I am persuaded, in addition to BOOK 1, to give
away BOOK 6 as a FREE download @ http://stores.lulu.com/thomasscarborough
(or printed at a mere $6.95). I consider that BOOK 6 contains some of my
best designs (FREE does not mean a reduction in value). BOOK 6 again
includes five designs using just 6 components, or less: a TENS Unit (for
pain control, and other purposes), a BB Metal Detector (much more
sensitive than BFO), a Diode Pump, a Free Energy Flasher (this actually
flashes off "thin air"), and an Auto Power-Down circuit -- with many
"further suggestions". But now that I have offered the download free,
imagine the smell of fresh paper in your hands ... to touch and handle the
pages ... to take in the deep colours of the cover ... to turn its gloss
in the light ... not to speak of the usefulness of having a printed copy
in front of you ... for a mere $6.95!

 

[Thomas Scarborough]

Hello Ernie,

Publisher stats show that a great many people were interested . The books
have risen rapidly through the rankings. Also, one may refer to reviews and
commendations (most recently in EPE magazine). I myself, in the past,
received a love for electronics through electronics books, and would hope
that others will receive a love for electronics through mine.

With kind regards,
Thomas Scarborough.


"Ernie Werbel" <no@spam.com> wrote in message
news:G5TUh.723$Da6.699@trnddc02...

Look, nobody was interested the first time you posted or else there would
have been numerous responses saying how great your book is. So go bother
some other newsgroup with your spam.

Ernie

 

[John Fields]

On Fri, 18 May 2007 10:55:07 +0200, "Thomas Scarborough"
<scarboro@iafrica.com> wrote:

Hello Ernie,

Publisher stats show that a great many people were interested . The books
have risen rapidly through the rankings. Also, one may refer to reviews and
commendations (most recently in EPE magazine). I myself, in the past,
received a love for electronics through electronics books, and would hope
that others will receive a love for electronics through mine.

With kind regards,
Thomas Scarborough.

---
Hello Thomas,

This is USENET, not email, and the custom on most newsgroups is to
bottom post.

In any case, I previewed your "Book 3" and I must say I think you've
lost your mind with your relay powered shocker. Not only would it
be a dangerous machine without the "grippers", with them it's an
invitation to disaster since the electrical impulses from the decay
of the magnetic field surrounding the relay coil are forced to
travel from arm to arm through the chest where an organ called the
"heart" resides. I'm sure you've heard of it, but it seems you've
not heard about fibrillation, which could be triggered by your
device.

I suggest you present this information to your publisher at your
earliest convenience in order that the book be recalled so that any
deaths that have not yet occurred be prevented.
---

"Ernie Werbel" <no@spam.com> wrote in message
news:G5TUh.723$Da6.699@trnddc02...
Look, nobody was interested the first time you posted or else there would
have been numerous responses saying how great your book is. So go bother
some other newsgroup with your spam.

Ernie

--
JF

 

[John Fields]

On Fri, 18 May 2007 08:05:04 -0500, John Fields
<jfields@austininstruments.com> wrote:

On Fri, 18 May 2007 10:55:07 +0200, "Thomas Scarborough"
scarboro@iafrica.com> wrote:

Hello Ernie,

Publisher stats show that a great many people were interested . The books
have risen rapidly through the rankings. Also, one may refer to reviews and
commendations (most recently in EPE magazine). I myself, in the past,
received a love for electronics through electronics books, and would hope
that others will receive a love for electronics through mine.

With kind regards,
Thomas Scarborough.

---
Hello Thomas,

This is USENET, not email, and the custom on most newsgroups is to
bottom post.

In any case, I previewed your "Book 3" and I must say I think you've
lost your mind with your relay powered shocker. Not only would it
be a dangerous machine without the "grippers", with them it's an
invitation to disaster since the electrical impulses from the decay
of the magnetic field surrounding the relay coil are forced to
travel from arm to arm through the chest where an organ called the
"heart" resides. I'm sure you've heard of it, but it seems you've
not heard about fibrillation, which could be triggered by your
device.

I suggest you present this information to your publisher at your
earliest convenience in order that the book be recalled so that any
deaths that have not yet occurred be prevented.
---

---
P.S.

Please post back quickly with whether or not you're going to notify
your publisher or I will.


--
JF

 

[John Fields]

On Fri, 18 May 2007 10:55:07 +0200, "Thomas Scarborough"
<scarboro@iafrica.com> wrote:

Hello Ernie,

Publisher stats show that a great many people were interested . The books
have risen rapidly through the rankings. Also, one may refer to reviews and
commendations (most recently in EPE magazine). I myself, in the past,
received a love for electronics through electronics books, and would hope
that others will receive a love for electronics through mine.

With kind regards,
Thomas Scarborough.

---
Hello Thomas,

This is USENET, not email, and the custom on most newsgroups is to
bottom post.

In any case, I previewed your "Book 3" and I must say I think you've
lost your mind with your relay powered shocker. Not only would it
be a dangerous machine without the "grippers", with them it's an
invitation to disaster since the electrical impulses from the decay
of the magnetic field surrounding the relay coil are forced to
travel from arm to arm through the chest where an organ called the
"heart" resides. I'm sure you've heard of it, but it seems you've
not heard about fibrillation, which could be triggered by your
device.

I suggest you present this information to your publisher at your
earliest convenience in order that the book be recalled so that any
deaths that have not yet occurred be prevented.
---

"Ernie Werbel" <no@spam.com> wrote in message
news:G5TUh.723$Da6.699@trnddc02...
Look, nobody was interested the first time you posted or else there would
have been numerous responses saying how great your book is. So go bother
some other newsgroup with your spam.

Ernie

--
JF

 

[Peter Hucker]

On Fri, 18 May 2007 17:21:00 +0100, John Fields <jfields@austininstruments.com> wrote:

On Fri, 18 May 2007 10:55:07 +0200, "Thomas Scarborough"
scarboro@iafrica.com> wrote:

Hello Ernie,

Publisher stats show that a great many people were interested . The books
have risen rapidly through the rankings. Also, one may refer to reviews and
commendations (most recently in EPE magazine). I myself, in the past,
received a love for electronics through electronics books, and would hope
that others will receive a love for electronics through mine.

With kind regards,
Thomas Scarborough.

---
Hello Thomas,

This is USENET, not email, and the custom on most newsgroups is to
bottom post.

In any case, I previewed your "Book 3" and I must say I think you've
lost your mind with your relay powered shocker. Not only would it
be a dangerous machine without the "grippers", with them it's an
invitation to disaster since the electrical impulses from the decay
of the magnetic field surrounding the relay coil are forced to
travel from arm to arm through the chest where an organ called the
"heart" resides. I'm sure you've heard of it, but it seems you've
not heard about fibrillation, which could be triggered by your
device.

I suggest you present this information to your publisher at your
earliest convenience in order that the book be recalled so that any
deaths that have not yet occurred be prevented.

Don't you just hate safety first types?


--
http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com

The teacher wrote "Like I ain't had no fun in months" on the board and then she said, "Timmy, how should I correct that?"
Timmy replied, "Maybe get a new boyfriend?"

 

[Charles]

imagine the smell of fresh
paper in your hands ... to touch and handle the pages ... to take in the
deep colours of the cover ... to turn its gloss in the light ... not to
speak of the usefulness of having a printed copy in front of you ... for a
mere $6.95!

Holly shite ... it's a paper hoe!

 

[John Fields]

On Sun, 20 May 2007 18:25:19 +0100, "Peter Hucker" <none@spam.com>
wrote:

On Fri, 18 May 2007 17:21:00 +0100, John Fields <jfields@austininstruments.com> wrote:

On Fri, 18 May 2007 10:55:07 +0200, "Thomas Scarborough"
scarboro@iafrica.com> wrote:

Hello Ernie,

Publisher stats show that a great many people were interested . The books
have risen rapidly through the rankings. Also, one may refer to reviews and
commendations (most recently in EPE magazine). I myself, in the past,
received a love for electronics through electronics books, and would hope
that others will receive a love for electronics through mine.

With kind regards,
Thomas Scarborough.

---
Hello Thomas,

This is USENET, not email, and the custom on most newsgroups is to
bottom post.

In any case, I previewed your "Book 3" and I must say I think you've
lost your mind with your relay powered shocker. Not only would it
be a dangerous machine without the "grippers", with them it's an
invitation to disaster since the electrical impulses from the decay
of the magnetic field surrounding the relay coil are forced to
travel from arm to arm through the chest where an organ called the
"heart" resides. I'm sure you've heard of it, but it seems you've
not heard about fibrillation, which could be triggered by your
device.

I suggest you present this information to your publisher at your
earliest convenience in order that the book be recalled so that any
deaths that have not yet occurred be prevented.

Don't you just hate safety first types?

---
Strange comment. I'd think that stopping someone's heart because of
stupidity would ordinarily be looked on as negative. You wouldn't?


--
JF

 

[Peter Hucker]

On Mon, 21 May 2007 11:08:31 +0100, John Fields <jfields@austininstruments.com> wrote:

On Sun, 20 May 2007 18:25:19 +0100, "Peter Hucker" <none@spam.com
wrote:

On Fri, 18 May 2007 17:21:00 +0100, John Fields <jfields@austininstruments.com> wrote:

On Fri, 18 May 2007 10:55:07 +0200, "Thomas Scarborough"
scarboro@iafrica.com> wrote:

Hello Ernie,

Publisher stats show that a great many people were interested . The books
have risen rapidly through the rankings. Also, one may refer to reviews and
commendations (most recently in EPE magazine). I myself, in the past,
received a love for electronics through electronics books, and would hope
that others will receive a love for electronics through mine.

With kind regards,
Thomas Scarborough.

---
Hello Thomas,

This is USENET, not email, and the custom on most newsgroups is to
bottom post.

In any case, I previewed your "Book 3" and I must say I think you've
lost your mind with your relay powered shocker. Not only would it
be a dangerous machine without the "grippers", with them it's an
invitation to disaster since the electrical impulses from the decay
of the magnetic field surrounding the relay coil are forced to
travel from arm to arm through the chest where an organ called the
"heart" resides. I'm sure you've heard of it, but it seems you've
not heard about fibrillation, which could be triggered by your
device.

I suggest you present this information to your publisher at your
earliest convenience in order that the book be recalled so that any
deaths that have not yet occurred be prevented.

Don't you just hate safety first types?

---
Strange comment. I'd think that stopping someone's heart because of
stupidity would ordinarily be looked on as negative. You wouldn't?

If someone wants to stop their own heart through stupidity, I say let them.

--
This message has been brought to you by solar power.
http://www.petersparrots.com http://www.insanevideoclips.com http://www.petersphotos.com

Take notice: when this sign is under water, this road is impassable.

 

[John Fields]

On Wed, 23 May 2007 20:01:03 +0100, "Peter Hucker" <none@spam.com>
wrote:

On Mon, 21 May 2007 11:08:31 +0100, John Fields <jfields@austininstruments.com> wrote:

On Sun, 20 May 2007 18:25:19 +0100, "Peter Hucker" <none@spam.com

Don't you just hate safety first types?

---
Strange comment. I'd think that stopping someone's heart because of
stupidity would ordinarily be looked on as negative. You wouldn't?

If someone wants to stop their own heart through stupidity, I say let them.

---
If someone _wants_ to stop their own heart, then they're hardly
going to be able to do it through stupidity, since they'll have to
learn how to do it.

However, that's not the point, the point being that you seem to
consider deaths caused by inherently unsafe designs acceptable and
the flagging of those designs as unsafe, undesirable.

Unusual viewpoint, wouldn't you agree?


--
JF

 

[CoyoteBoy]

I'd suggest that that circuit is safe enough if used within the
guidelines he lays out, its a high-school science fair standard
circuit, producing a very minimal shock. I wouldnt suggest putting it
through grippers on each arm, in case your "victim" happens to have a
very weak heart/pacemaker etc, but through a small contact point on
one limb would be pretty much harmless. This is really picking holes
for the sake of it. It is spam but dont fall victim of making
mountains out of molehills to shut a spammer up.

 

[John Fields]

On 31 May 2007 07:10:52 -0700, CoyoteBoy <james.buckle@gmail.com>
wrote:

I'd suggest that that circuit is safe enough if used within the
guidelines he lays out, its a high-school science fair standard
circuit, producing a very minimal shock.

---
The guidelines he lays out are wrong.

In the first place, wet skin resistance is very much less than 200k
ohms. Try it. Lick the thumb and forefinger of both your hands and
pick up an ohmmeter's probes with them. I get about 100K which means
about 1mA with 100V spikes from the coil at whatever frequency it's
buzzing at.
---

I wouldnt suggest putting it through grippers on each arm,

---
But those are the guidelines he lays out, and your:

"I'd suggest that that circuit is safe enough if used within the
guidelines he lays out." seems to conflict with your new
restrictions that it isn't if grippers are used.
---

in case your "victim" happens to have a very weak heart/pacemaker
etc, but through a small contact point on one limb would be pretty
much harmless.

---
There's no way that you can determine either without knowing
something about the victim, so to blindly shock him might cause his
death. And for what reason? Just to be able to laugh at his
discomfort? That's sick.

And, BTW, the grippers are a _very_ bad idea, because the muscles in
your hands will cause your fingers to grab even harder when they're
shocked, making it impossible to let go of the grippers.
---

This is really picking holes for the sake of it.

---
Try not to be an ass. Shocking someone for no other reason than to
be able to laugh at them ranks right up there with pulling legs off
of insects in order to laugh at their staggering,
---

It is spam but dont fall victim of making mountains out of molehills
to shut a spammer up.

---
Oh, please...

Spare me the platitudes.


--
JF

 

[CoyoteBoy]

The guidelines he lays out are wrong.

In the first place, wet skin resistance is very much less than 200k
ohms. Try it. Lick the thumb and forefinger of both your hands and
pick up an ohmmeter's probes with them. I get about 100K which means
about 1mA with 100V spikes from the coil at whatever frequency it's
buzzing at.

I got 230ishK on a very wet hand, and rapidly rising with evaporation.

But those are the guidelines he lays out, and your:

"I'd suggest that that circuit is safe enough if used within the
guidelines he lays out." seems to conflict with your new
restrictions that it isn't if grippers are used.

According to the UK PAT testing guidelines (who i presume have done a
little research on it), ventricular fibrillation occurs at currents of
60mA upward on AC and 300-500mA DC. Id suggest his circuit was a way
clear of that sort of power.

There's no way that you can determine either without knowing
something about the victim, so to blindly shock him might cause his
death. And for what reason? Just to be able to laugh at his
discomfort? That's sick.

True you wouldnt know without asking. However he doesnt suggest doing
it to unwilling/unsuspecting victims. And you'd be stupid to do it if
you knew you had a heart problem. So it leaves the extremely unlikely
case that you have a heart problem and dont know it, his circuit
generates an aweful lot more power than it claims and your skin is
particularly conductive. Every kid has touched an electric fence for a
chuckle. Most of us have "zapped" someone with static from an old
monitor. Sure, its sick if youre a very sheltered person. You get a
more powerful shock from the static buildup on a car.

And, BTW, the grippers are a _very_ bad idea, because the muscles in
your hands will cause your fingers to grab even harder when they're
shocked, making it impossible to let go of the grippers.

Not the case, this does not happen with AC shocks, only DC. Try it (I
have a bit of experience with electric shocks of varying degrees) -
this sort of circuit tingles, the AC excitation causes the muscles to
contract then expand, not contract and stay like that.

This is really picking holes for the sake of it.

Try not to be an ass. Shocking someone for no other reason than to
be able to laugh at them ranks right up there with pulling legs off
of insects in order to laugh at their staggering,

Not really, apart from the highly unlikely case above you are unlikely
to case the person any harm at all other than a tingle like a nettle
sting. Pulling the legs off an insect will cause considerable
suffering.

Soon you'll be suggesting banning those sour sweets because they're
sick and rank up there with feeding fizzy sweets to seaguls. Talk
about exaggeration. No wonder the US is laughed at by the rest of the
world as over-litigious and a nanny-state if you're considered normal
there! I suspect its people like you who instigated putting "Caution
HOT!" on coffee cups and radiators.

It is spam but dont fall victim of making mountains out of molehills
to shut a spammer up.

Spare me the platitudes.

Spare us the pointless hole-picking and exaggeration and I will.

 

[John Fields]

On Fri, 01 Jun 2007 07:28:01 -0700, CoyoteBoy
<james.buckle@gmail.com> wrote:

The guidelines he lays out are wrong.

In the first place, wet skin resistance is very much less than 200k
ohms. Try it. Lick the thumb and forefinger of both your hands and
pick up an ohmmeter's probes with them. I get about 100K which means
about 1mA with 100V spikes from the coil at whatever frequency it's
buzzing at.

I got 230ishK on a very wet hand, and rapidly rising with evaporation.

---
Well, I've always heard that you Brits are dry. Now, it seems,
you've provided proof.
---

But those are the guidelines he lays out, and your:

"I'd suggest that that circuit is safe enough if used within the
guidelines he lays out." seems to conflict with your new
restrictions that it isn't if grippers are used.

According to the UK PAT testing guidelines (who i presume have done a
little research on it), ventricular fibrillation occurs at currents of
60mA upward on AC and 300-500mA DC. Id suggest his circuit was a way
clear of that sort of power.

---
59mA seems a little high to let go ripping through someone's body
because of a 60mA "lower limit" decided on by some body who made the
rules depending on what? The actual cause of death of a human in a
test rig? More likely an extrapolation based on an electrocuted
rat.

Also you've neglected to consider the contact _area_ of the
grippers.

Let's assume that your ohmmeter probes each have a diameter of
0.090" and that by pressing them between your saliva wettened thumbs
and forefingers the contact areas developed were those described by
the external walls of two cylindrical surfaces.

Except for the interstitial spaces where your fingers didn't meet...

But, for the moment, let's assume perfect cylinders.

Assuming the altitude of the cylinder (the length of contact
between the thumb and the forefinger) at about five eighths of an
inch and a diameter of 0.090" (for the contact) gives us:

S = pi D H = 3.14 * 0.090" * 0.625" ~ 0.176"˛

for the area of each cylinder.

Since there are two of them, that's a total of 0.352" square inches
of low resistance through which you measured the resistance of your
body, which you report at around 200kR.

Now, using the grippers, (assume something comfortable to hold, like
1/2" diameter copper tubing) assuming about a 3" length, the area of
those cylinders would be 9.42"˛.

Now, since resistance is going to be inversely proportional to area
and the ratio of the two areas is:

S2 9.42
n = ---- = ------- ~ 26.8
S1 0.352

using the grippers will cause the skin resistance to fall to 26.8
times less than it was with the test leads, or about 7500 ohms if
someone has a skin resistance of 200k ohms. That comes out to about
13mA if the voltage coming off of the coil is 100V. I think that's
about twice the kind of current ground fault interrupters trip at,
which is far below your so-called "safe" 60mA limit.
---

There's no way that you can determine either without knowing
something about the victim, so to blindly shock him might cause his
death. And for what reason? Just to be able to laugh at his
discomfort? That's sick.

True you wouldnt know without asking. However he doesnt suggest doing
it to unwilling/unsuspecting victims.

---
Sure he does. Check out page 8 at:

http://www.lulu.com/browse/preview.php?fCID=786843

And you'd be stupid to do it if
you knew you had a heart problem. So it leaves the extremely unlikely
case that you have a heart problem and dont know it, his circuit
generates an aweful lot more power than it claims and your skin is
particularly conductive.

---
Many people are walking around with arrhythmias they know nothing
about, he makes no claim about the amount of power the circuit
delivers other than to say that some relays are more powerful than
others, and many people have very conductive skin.
---

Every kid has touched an electric fence for a
chuckle.

---
I didn't, when I was a kid, because I didn't think it would be
funny, so you're wrong.
---

Most of us have "zapped" someone with static from an old
monitor. Sure, its sick if youre a very sheltered person. You get a
more powerful shock from the static buildup on a car.

---
But a _single_ one. The shocks from his circuit are recurrent.
---

And, BTW, the grippers are a _very_ bad idea, because the muscles in
your hands will cause your fingers to grab even harder when they're
shocked, making it impossible to let go of the grippers.

Not the case, this does not happen with AC shocks, only DC. Try it (I
have a bit of experience with electric shocks of varying degrees) -
this sort of circuit tingles, the AC excitation causes the muscles to
contract then expand, not contract and stay like that.

---
Your "experience" must be very limited then. Have you ever seen an
"old hand" electrician check to see whether a line is hot or not by
briefly touching it? He'll give it a brief tap with a knuckle
precisely _because_ if he uses the front of a finger it's likely to
cramp and wrap itself around the wire.

Besides, muscles don't expand, they can only contract and relax, and
at 50 or 60Hz contraction happens much more quickly than relaxation,
so 'contract' always wins.
---

This is really picking holes for the sake of it.

Try not to be an ass. Shocking someone for no other reason than to
be able to laugh at them ranks right up there with pulling legs off
of insects in order to laugh at their staggering,

Not really, apart from the highly unlikely case above you are unlikely
to case the person any harm at all other than a tingle like a nettle
sting.

---
"Highly unlikely" isn't the same as complete certainty, is it?

My point is that if there's even the slightest likelihood that it'll
hurt someone, it shouldn't be done.
---

Pulling the legs off an insect will cause considerable
suffering.

---
If you can understand that, then I find it incongruous that you
would discount the possibility of causing a person considerable harm
with "electroshock humor" just because of your desire to see them
jump.
---

Soon you'll be suggesting banning those sour sweets because they're
sick and rank up there with feeding fizzy sweets to seaguls. Talk
about exaggeration. No wonder the US is laughed at by the rest of the
world as over-litigious and a nanny-state if you're considered normal
there! I suspect its people like you who instigated putting "Caution
HOT!" on coffee cups and radiators.

---
Straw man.
---

It is spam but dont fall victim of making mountains out of molehills
to shut a spammer up.

Spare me the platitudes.

Spare us the pointless hole-picking and exaggeration and I will.

---
I hardly think it's pointless hole-picking and exaggeration to point
out that electroshock is dangerous and can be fatal. YMMV.


--
JF