Line Volytage frequency Interface
Just for the unwary I saw some statistics about causes of death a while ago. Amongst them was the fact that, on average,
THREE PEOPLE A YEAR DIE FROM TESTING 9 VOLT BATTERIES ON THEIR TONGUES IN THE UK.
I recently joined St John Ambulance as a volunteer and I would much rather not have to use my CPR skills on a fellow Time Nut.
Please always think safety first.
Malcolm
In message 8CE7C3F5C8796A8-1410-83DB7@webmail-m022.sysops.aol.com, Malcolm wr
ites:
THREE PEOPLE A YEAR DIE FROM TESTING 9 VOLT BATTERIES ON THEIR
TONGUES IN THE UK.
Show me one verified coroners certificate and I'll belive you.
See also:
http://www.theregister.co.uk/2006/07/28/the_odd_body_death_by_battery/
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
I wouldnt even rely on that..... a coroner in the US recently proclaimed
that the cause of death was "spontaeous human combustion" (again) despite
all the TV programs debunking that old wives tale.
Alan G3NYK
----- Original Message -----
From: "Poul-Henning Kamp" phk@phk.freebsd.dk
To: "Discussion of precise time and frequency measurement"
time-nuts@febo.com
Sent: Monday, November 28, 2011 11:54 PM
Subject: Re: [time-nuts] Line Volytage frequency Interface
Malcolm wr
ites:
THREE PEOPLE A YEAR DIE FROM TESTING 9 VOLT BATTERIES ON THEIR
TONGUES IN THE UK.
Show me one verified coroners certificate and I'll belive you.
See also:
http://www.theregister.co.uk/2006/07/28/the_odd_body_death_by_battery/
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by
incompetence.
and follow the instructions there.
Yes, that does happen (especially when dealing with medium voltage power lines).
On 11/28/2011 7:32 PM, Alan Melia wrote:
I wouldnt even rely on that..... a coroner in the US recently proclaimed
that the cause of death was "spontaeous human combustion" (again) despite
all the TV programs debunking that old wives tale.
Alan G3NYK
----- Original Message -----
From: "Poul-Henning Kamp"phk@phk.freebsd.dk
To: "Discussion of precise time and frequency measurement"
time-nuts@febo.com
Sent: Monday, November 28, 2011 11:54 PM
Subject: Re: [time-nuts] Line Volytage frequency Interface
Malcolm wr
ites:
THREE PEOPLE A YEAR DIE FROM TESTING 9 VOLT BATTERIES ON THEIR
TONGUES IN THE UK.
Show me one verified coroners certificate and I'll belive you.
See also:
http://www.theregister.co.uk/2006/07/28/the_odd_body_death_by_battery/
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by
incompetence.
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
No virus found in this message.
Checked by AVG - www.avg.com
Version: 10.0.1411 / Virus Database: 2092/4045 - Release Date: 11/28/11
BS!
Malcolm wrote:
Just for the unwary I saw some statistics about causes of death a while ago.
Amongst them was the fact that, on average,
THREE PEOPLE A YEAR DIE FROM TESTING 9 VOLT BATTERIES ON THEIR TONGUES IN THE UK.
I recently joined St John Ambulance as a volunteer and I would much rather not
have to use my CPR skills on a fellow Time Nut.
Please always think safety first.
Malcolm _______________________________________________ time-nuts mailing list --
time-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the
instructions there.
Maybe they choked on them?
On 11/28/2011 8:14 PM, Chuck Harris wrote:
BS!
Malcolm wrote:
Just for the unwary I saw some statistics about causes of death a while ago.
Amongst them was the fact that, on average,
THREE PEOPLE A YEAR DIE FROM TESTING 9 VOLT BATTERIES ON THEIR TONGUES IN THE
UK.
I recently joined St John Ambulance as a volunteer and I would much rather not
have to use my CPR skills on a fellow Time Nut.
Please always think safety first.
Malcolm _______________________________________________ time-nuts mailing
list --
time-nuts@febo.com To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the
instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
No virus found in this message.
Checked by AVG - www.avg.com
Version: 10.0.1411 / Virus Database: 2092/4045 - Release Date: 11/28/11
Every time I follow a school bus that stops at a railroad crossing and
opens its doors to stop, look, and listen - even though there is no
sign with crossed bars saying "Stop, Look, and Listen" and there are
many flashing red lights when a train approaches - I think of politicians
who would not put their name to a bill that compromised children's safety,
in any way real or imagined.
Lawyers are responsible for the death of common sense in the USA.
Trial lawyers, that is.
Now, a 9 volt battery has a few centimeters between terminals, if that.
It is commonly accepted that electrocution needs a path through the heart
to succeed, as well as many milliamps. GFCI outlets trip at about 5 mA.
Pain begins at 10 mA. You would be hard pressed to get those currents
anywhere on the human body, never mind through the heart, with 9 VDC.
There is a reason why someone using a defibrillator shouts, "Clear."
There was a time, before the internet, when most people were ashamed to
venture opinions on things they didn't know about, so they stayed quiet.
The anonymity of the Internet has made it possible for people to share
their ignorance with no shame, and we are poorer for it.
Notice the obligatory use of the word "time" in the above paragraph.
In the words of another organization for another reason, "Move on."
Bill Hawkins
OTOH, I remember being very afraid, at 6 years old, when my father
told me it was OK to touch the terminals of a car battery. I'd heard
that electricity killed, but I had no idea of the magnitudes involved.
Recently, I took an old disposable 35mm film camera appart. It had a
flash, powered by a 1.5 V carbon-zinc AA battery. Inadvertantly, I got
across the terminals of the flash capacitor and got a hell of a shock.
Had the current gone through the right (wrong?) place, I could well be dead.
-John
===============
Every time I follow a school bus that stops at a railroad crossing and
opens its doors to stop, look, and listen - even though there is no
sign with crossed bars saying "Stop, Look, and Listen" and there are
many flashing red lights when a train approaches - I think of politicians
who would not put their name to a bill that compromised children's safety,
in any way real or imagined.
Lawyers are responsible for the death of common sense in the USA.
Trial lawyers, that is.
Now, a 9 volt battery has a few centimeters between terminals, if that.
It is commonly accepted that electrocution needs a path through the heart
to succeed, as well as many milliamps. GFCI outlets trip at about 5 mA.
Pain begins at 10 mA. You would be hard pressed to get those currents
anywhere on the human body, never mind through the heart, with 9 VDC.
There is a reason why someone using a defibrillator shouts, "Clear."
There was a time, before the internet, when most people were ashamed to
venture opinions on things they didn't know about, so they stayed quiet.
The anonymity of the Internet has made it possible for people to share
their ignorance with no shame, and we are poorer for it.
Notice the obligatory use of the word "time" in the above paragraph.
In the words of another organization for another reason, "Move on."
Bill Hawkins
OTOH, I remember being very afraid, at 6 years old, when my father
told me it was OK to touch the terminals of a car battery. I'd heard
that electricity killed, but I had no idea of the magnitudes involved.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
Those capacitors in there can pack a wallop. I've played with various strobes
since I was very young so learned that lesson early. Short it out and see the
bang you get! (don't use your good screwdriver to do this).
Yes, I'm sure those things can be lethal.
Microwave ovens can be even worse.
On 11/28/2011 10:42 PM, J. Forster wrote:
Recently, I took an old disposable 35mm film camera appart. It had a
flash, powered by a 1.5 V carbon-zinc AA battery. Inadvertantly, I got
across the terminals of the flash capacitor and got a hell of a shock.
Had the current gone through the right (wrong?) place, I could well be dead.
-John
===============
Every time I follow a school bus that stops at a railroad crossing and
opens its doors to stop, look, and listen - even though there is no
sign with crossed bars saying "Stop, Look, and Listen" and there are
many flashing red lights when a train approaches - I think of politicians
who would not put their name to a bill that compromised children's safety,
in any way real or imagined.
Lawyers are responsible for the death of common sense in the USA.
Trial lawyers, that is.
Now, a 9 volt battery has a few centimeters between terminals, if that.
It is commonly accepted that electrocution needs a path through the heart
to succeed, as well as many milliamps. GFCI outlets trip at about 5 mA.
Pain begins at 10 mA. You would be hard pressed to get those currents
anywhere on the human body, never mind through the heart, with 9 VDC.
There is a reason why someone using a defibrillator shouts, "Clear."
There was a time, before the internet, when most people were ashamed to
venture opinions on things they didn't know about, so they stayed quiet.
The anonymity of the Internet has made it possible for people to share
their ignorance with no shame, and we are poorer for it.
Notice the obligatory use of the word "time" in the above paragraph.
In the words of another organization for another reason, "Move on."
Bill Hawkins
OTOH, I remember being very afraid, at 6 years old, when my father
told me it was OK to touch the terminals of a car battery. I'd heard
that electricity killed, but I had no idea of the magnitudes involved.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
No virus found in this message.
Checked by AVG - www.avg.com
Version: 10.0.1411 / Virus Database: 2092/4045 - Release Date: 11/28/11
Oh, yeah, about the line interface for measurement...
I hooked up a 47k resistor from line to the 50 ohm input of my 5334B and it
"just worked." I am watching the 60 Hz drift all around as I type this
(although not all that far, seems to be holding within 0.01 Hz tonight).
On 11/28/2011 10:42 PM, J. Forster wrote:
Recently, I took an old disposable 35mm film camera appart. It had a
flash, powered by a 1.5 V carbon-zinc AA battery. Inadvertantly, I got
across the terminals of the flash capacitor and got a hell of a shock.
Had the current gone through the right (wrong?) place, I could well be dead.
-John
===============
Every time I follow a school bus that stops at a railroad crossing and
opens its doors to stop, look, and listen - even though there is no
sign with crossed bars saying "Stop, Look, and Listen" and there are
many flashing red lights when a train approaches - I think of politicians
who would not put their name to a bill that compromised children's safety,
in any way real or imagined.
Lawyers are responsible for the death of common sense in the USA.
Trial lawyers, that is.
Now, a 9 volt battery has a few centimeters between terminals, if that.
It is commonly accepted that electrocution needs a path through the heart
to succeed, as well as many milliamps. GFCI outlets trip at about 5 mA.
Pain begins at 10 mA. You would be hard pressed to get those currents
anywhere on the human body, never mind through the heart, with 9 VDC.
There is a reason why someone using a defibrillator shouts, "Clear."
There was a time, before the internet, when most people were ashamed to
venture opinions on things they didn't know about, so they stayed quiet.
The anonymity of the Internet has made it possible for people to share
their ignorance with no shame, and we are poorer for it.
Notice the obligatory use of the word "time" in the above paragraph.
In the words of another organization for another reason, "Move on."
Bill Hawkins
OTOH, I remember being very afraid, at 6 years old, when my father
told me it was OK to touch the terminals of a car battery. I'd heard
that electricity killed, but I had no idea of the magnitudes involved.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
No virus found in this message.
Checked by AVG - www.avg.com
Version: 10.0.1411 / Virus Database: 2092/4045 - Release Date: 11/28/11