For you smart audiophiles...
 

"Eisboch" wrote in
:

The worst shock I ever received was from a high power, high voltage DC
power supply. 12,000 volts with current capacity of 1.5 amps.
Happened at the first job I had after leaving the Navy. I remember my
hands feeling like basketballs, then I went out like a light. Woke up
in the ambulance on the way to the hospital.


I got mine aboard USS Everglades (AD-24), the tender I spent over 3 years
on in the 1960's. Radio 2 had TBK, TBL, TBM and TCS transmitters from
WW2 on them, still. TBK's were powered from Ship's 110V DC off a steam-
powered generator, that also ran the on-deck winches.

I had a TBK tagged out, logged out for maintenance to fix the broken one,
also tagged out properly, making resistance measurements on the HV DC
generator on the good one when an idiot RM2 fired off the genset dispite
the tagout. I woke up a couple of hours later in sick bay staring into
my captain's worried face next to my chief.

The RM2 made RMSM before his transfer went through. My tags were treated
with more respect in Radio Central after that. My captain was NOT
amused.

That generator was rated at 1.5A 3KV continuous duty. I don't know how
much current it was capable of when you were between HV and the chassis
of it. I can attest it was "substantial". Two fingers were burned and
had no feeling for over a year.

Loved those old TBKs. I could call Test Control on Sullivan's Island on
2150 from half way across the Atlantic on 'em with CW and get an
immediate answer of 5-9-9 almost any night to/from the Med...(c; The AM
modulators were added later and were big bulkhead-mounted audio power
amps in that 3000VDC line from the genset. The air around the longwires
glowed blue if you tuned 'em up right....(c;

Larry
--
I was WB4THE in those days, the only ham aboard. My comm officer hated
my guts because our captain thought it was funny to rush into Radio
Central and demand to talk to Charleston from Gibraltar, immediately. Of
course, that wasn't gonna happen on a 500W URC-32 into a 32' whip through
a tuner so inefficient it had to have a cooling fan.

"I'm sorry, Sir. We don't have direct comms with Charleston.", he'd tell
our captain.

"That's crap!", our captain would tell him, "I was just talking to my
wife on James Island through ET1 Butler's Heathkit ham station back in
the cal lab through his buddy's phone patch!"

Hence the comm officer's hatred.....(c;

My homebrew KW amp looked exactly like a Hewlett-Packard 524D freq
counter in the cal lab's rack! Even the neon numbers read 000000000.

For you smart audiophiles...
 

"D.Duck" wrote in
:

Now a Marine would never pull a stunt like that. :-)



Marines are terrified of Tesla coils....(c;

Larry
--
I worked hard under Social Security since I was 12.
My SS retirement check is one oz of gold per month.
Can we afford to start any more wars for corporations?

For you smart audiophiles...
 

Short Wave Sportfishing wrote in
:

I don't know how true this is, but I've been to a trauma seminar where
the presenter told of a guy who had 100 Kv go through him at a very
low amperage - like milliamps and walked away with only burn marks to
show for it.

Couldn't prove it by me.



Voltage means nothing. Current kills. Here's what a few million volts
looks like going through a man with no ill effects:

http://youtube.com/watch?v=iO7j5LKmd3I
The only danger is getting an arc HEAT burn, which is why he doesn't arc
it to his fingers...(c;

The Death Cage.
http://youtube.com/watch?v=Zi4kXgDBFhw
Of course, inside the cage it doesn't go through you....much.

And the Oklahoma Grandaddy of them all...
http://youtube.com/watch?v=FY-AS13fl30

The Griffith Observatory's Tesla Coil is very educational...
http://youtube.com/watch?v=PpBO019hVsc

Larry
--
Notice - RF is very dangerous to your health so don't put your SELLphone
up to your ear as it will cook your brain.....right?

For you smart audiophiles...
 

JimH wrote:
"Reginald P. Smithers III" "Reggie is Here wrote in message
. ..
Short Wave Sportfishing wrote:
On Fri, 28 Dec 2007 21:03:46 -0500, "Reginald P. Smithers III"
"Reggie is Here wrote:

Short Wave Sportfishing wrote:
On Fri, 28 Dec 2007 19:56:26 -0500, "Eisboch" wrote:

The worst shock I ever received was from a high power, high voltage DC
power supply. 12,000 volts with current capacity of 1.5 amps.
Same here - lower voltage and amperage - 10Kv at about an amp.

Started at my right wrist and out through my finger tips.

What's funny is that every once in a while, the hand feels like it's
twitching really fast, but you can't see it. Another interesting side
effect is that it never seems to warm up - it always feels like it's
cold, but it's not.

Weird.
I saw a magician (I think it was the Mindfreak guy) get hit with
20,000,000 volts, but they never said how many amps.
I don't know how true this is, but I've been to a trauma seminar where
the presenter told of a guy who had 100 Kv go through him at a very
low amperage - like milliamps and walked away with only burn marks to
show for it.

Couldn't prove it by me.
I am sorry, I just checked again and he only claimed it was 3 million
volts and he wore a Faraday cage (sp). I don't know if it is real or not
but here is the video:

http://vids.myspace.com/index.cfm?fu...oid=21136 431


This series of posts defines you Reggie.

You make a claim based on what you call first hand evidence but obviously
based only on misreading the real facts presented in your quick Google
search on the internet.

You are challenged.

You then back peddle and edit your initial claims, with your edited *facts*
being worlds apart from your original facts.

Once again............you relied on your friend Google.

So back to you original and then edited claim...........you really saw that,
eh?


ok, whatever you say.

For you smart audiophiles...
 

"Short Wave Sportfishing" wrote in message
...
On Fri, 28 Dec 2007 21:18:03 -0500, "D.Duck" wrote:


"Short Wave Sportfishing" wrote in message
. ..
On Fri, 28 Dec 2007 20:01:21 -0500, "D.Duck" wrote:


"Eisboch" wrote in message
news:lqGdncnIsp2iBujanZ2dnUVZ_tKinZ2d@giganews .com...

"D.Duck" wrote in message
...



That's why you should always be wearing your grounded wrist strap.
:-)


After a while I just got used to being the ground.

The worst shock I ever received was from a high power, high voltage DC
power supply. 12,000 volts with current capacity of 1.5 amps.
Happened
at the first job I had after leaving the Navy. I remember my hands
feeling like basketballs, then I went out like a light. Woke up in
the
ambulance on the way to the hospital.

They checked me out, EKG, all that stuff, then determined I was fine
other
than some minor burns on my fingers.

OUCH.....

Now a Marine would never pull a stunt like that. :-)

Wanna bet? :)

Well he damn sure wouldn't admit it!

Good point.

Air Force guy used a defective meter probe, was actually a strange design
one with a ring partway back from the tip. Checking the 400V DC on an
airborne radar unit, I connected to the 400V. Luckily I missed the work
benches as I made it about 20' from the unit when every muscle in the body
twitched. No lasting damage, but I hurt bad for about 3 days.

For you smart audiophiles...
 

"Short Wave Sportfishing" wrote in message
...
On Fri, 28 Dec 2007 21:03:46 -0500, "Reginald P. Smithers III"
"Reggie is Here wrote:

Short Wave Sportfishing wrote:
On Fri, 28 Dec 2007 19:56:26 -0500, "Eisboch" wrote:

The worst shock I ever received was from a high power, high voltage DC
power
supply. 12,000 volts with current capacity of 1.5 amps.

Same here - lower voltage and amperage - 10Kv at about an amp.

Started at my right wrist and out through my finger tips.

What's funny is that every once in a while, the hand feels like it's
twitching really fast, but you can't see it. Another interesting side
effect is that it never seems to warm up - it always feels like it's
cold, but it's not.

Weird.

I saw a magician (I think it was the Mindfreak guy) get hit with
20,000,000 volts, but they never said how many amps.

I don't know how true this is, but I've been to a trauma seminar where
the presenter told of a guy who had 100 Kv go through him at a very
low amperage - like milliamps and walked away with only burn marks to
show for it.

Couldn't prove it by me.

Guy in my reserve unit was a electric company technician. Fell off a ladder
at a substation and barely survived landing on a big capacitor. Burned a
large hole in his chest. I can remember the the GE road show coming to my
highschool and they generated lots of volts and not amps as a static charge
and did not kill anybody. Made the hair standup.

For you smart audiophiles...
 

"JG2U" wrote in message
...
On Fri, 28 Dec 2007 19:56:26 -0500, "Eisboch" wrote:


"D.Duck" wrote in message
om...



That's why you should always be wearing your grounded wrist strap. :-)


After a while I just got used to being the ground.

The worst shock I ever received was from a high power, high voltage DC
power
supply. 12,000 volts with current capacity of 1.5 amps. Happened at the
first job I had after leaving the Navy. I remember my hands feeling like
basketballs, then I went out like a light. Woke up in the ambulance on
the
way to the hospital.

They checked me out, EKG, all that stuff, then determined I was fine other
than some minor burns on my fingers.

Eisboch


Yep... I got bit by a cheap RF amp back in the CB days. No bleeders
on the HV section of a 500 watt amp. Knocked me back a few feet,
burns on my fingers where it entered and exited, and my arm hurt for a
few days.

I learned the ground jumper / screwdiver trick, and practiced it after
that.

In tech school we ran the TACAN on low power, which was 3000V on the tube
caps. And lots of current. We turned down the power on the drawer before
opening and then used a shorting bar to make sure all the caps were
discharged. One day the Vietnamese MAP student started discharging the caps
and sparks flying everywhere. Had not turned off the power. And this guy
had absolutely no business dealing in electricity. Was totally clueless.
Did not even notice things were different with the sparks flying.

For you smart audiophiles...
 

"Larry" wrote in message
...
"D.Duck" wrote in
:

In deflection circuits I designed the FBT had a bleeder resistor, to
improve regulation and discharge the CRT.




Yeah, but the bleeders were such high resistance the HV usually destroyed
them within a short time. They were just open spark gaps after that...(c;

Larry
--
I worked hard under Social Security since I was 12.
My SS retirement check is one oz of gold per month.
Can we afford to start any more wars for corporations?

Huh? The bleeders were 200M ohm in a monochrome display, and no, they did
not destroy themselves within a short time. The resistors are made with
carbon ink deposited on a ceramic substrate. The resistor is potted within
the FBT. Never had one fail and I'm sure they are still working just fine
20 plus years later.

For you smart audiophiles...
 

On Fri, 28 Dec 2007 23:58:33 -0800, "CalifBill"
wrote:


"Short Wave Sportfishing" wrote in message
.. .
On Fri, 28 Dec 2007 21:18:03 -0500, "D.Duck" wrote:


"Short Wave Sportfishing" wrote in message
...
On Fri, 28 Dec 2007 20:01:21 -0500, "D.Duck" wrote:


"Eisboch" wrote in message
news:lqGdncnIsp2iBujanZ2dnUVZ_tKinZ2d@giganew s.com...

"D.Duck" wrote in message
...



That's why you should always be wearing your grounded wrist strap.
:-)


After a while I just got used to being the ground.

The worst shock I ever received was from a high power, high voltage DC
power supply. 12,000 volts with current capacity of 1.5 amps.
Happened
at the first job I had after leaving the Navy. I remember my hands
feeling like basketballs, then I went out like a light. Woke up in
the
ambulance on the way to the hospital.

They checked me out, EKG, all that stuff, then determined I was fine
other
than some minor burns on my fingers.

OUCH.....

Now a Marine would never pull a stunt like that. :-)

Wanna bet? :)

Well he damn sure wouldn't admit it!

Good point.

Air Force guy used a defective meter probe, was actually a strange design
one with a ring partway back from the tip. Checking the 400V DC on an
airborne radar unit, I connected to the 400V. Luckily I missed the work
benches as I made it about 20' from the unit when every muscle in the body
twitched. No lasting damage, but I hurt bad for about 3 days.

My youngest son had to go through taser training a couple of months
ago. First you have to zap yourself, then have somebody zap you.

Said it the pain was unbelievable - took at least a couple of days to
work out the kinks.

For you smart audiophiles...
 

On Sat, 29 Dec 2007 05:13:23 +0000, Larry wrote:

Voltage means nothing. Current kills.

Yes Larry - I think we are all smart enough with some experience in
the area to understand that amps kill.