Frank, I understand your point, but here's mine:
"Somebody has to build them, otherwise there wouldn't be any amplifiers".
And if somebody builds them, somebody has to repair them.
I've built 5 amps in my ham career.
I admit, every time I have to work on the opened box, I'm frightened.
Frightened to the point that I pay extras attention to what I am doing.
I was also taught how to deal with it in school, and even in the Army.
I'm not sure the electronic schools even deal with this topic anymore.
The fact is, you need:
1. the proper training (and have understood it)
2. the proper test equipment, especially a HV probe
3. an accurate schematic of the equipment
4. to be very alert (not tired) when you work on it.
5. to have somebody else in the room watching you
And then it's OK.
If you're not in compliance with all 5 points, DON'T TOUCH IT.
73
Rick, DJ0IP
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Frank Kirschner
Sent: Wednesday, August 24, 2011 2:57 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] power went out
My Ph.D. is in electrical engineering, and I majored in biomedical
engineering. In our internship program at Ohio State University hospital, we
were informed that around 50,000 people are electrocuted in hospitals in the
US every year. Most of this is relatively low voltage, inadvertendly applied
to conductors that are inside the body, either during surgery or after.
Fifteen milliamps through the heart is enough to send it into fibrillation.
In spite of the fact that I've been repairing television sets since I was
12, I would not power up an amp with the cover off. As was pointed out, all
it would take is a slip of the hand, and your XYL gets your life insurance.
73,
Frank
KF6E
----- Original Message -----
From: Carl Moreschi
Sent: 08/24/11 12:14 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] power went out
A tenth of an amp is all it takes to kill. But it takes volts to make the
push to make the amps. In some scenarios, it is possible for 120 volts to
cause the tenth of an amp to flow to kill. Carl Moreschi N4PY 121 Little
Bell Dr. Hays, NC 28635 www.n4py.com
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