When I worked for HP, I was told to "go shopping" and handed the HP "Sears
Catalog". Besides a scope,dvm,counter etc...I grabbed an HP hi voltage probe.
Had no use for it work-wise...but had an SB200 on the bench at the time.
Still have that probe!!
...Dave
Sent from my iPad
On Aug 24, 2011, at 10:16 AM, "Rick - DJ0IP / NJ0IP" <Rick@DJ0IP.de> wrote:
> 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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