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Today's topics:

* measuring ampermeter meter internal resistance - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/27f050235cfa3de3?hl=en
* Another reason to hate CFLs ... - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/87ea27a2579f0316?hl=en

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TOPIC: measuring ampermeter meter internal resistance
http://groups.google.com/group/sci.electronics.repair/t/27f050235cfa3de3?hl=en
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== 1 of 1 ==
Date: Sat, Oct 23 2010 10:14 pm
From: Jeff Liebermann

On Sat, 23 Oct 2010 21:31:15 -0700, "John Fields"
<jfields@austininstruments.com> wrote:

>No Stupid, that's not the way to ampmeter range to higher range. Why did
>you call yourself Superpower Punk? You don't even know how to multiple the
>power of your electronic? You see, I am a superdumb-ass and I am very
>capable to multiple current as well as AmpMeter by 10X.
>JF

New York Makes Internet Impersonation a Crime
<http://www.hunton.com/files/tbl_s10News/FileUpload44/15889/new_york_internet_impersonation_privacy_alert.pdf>

California Bans Malicious Online Impersonation
<http://www.pcworld.com/businesscenter/article/206469/california_bans_malicious_online_impersonation.html>

etc...

--
Jeff Liebermann jeffl@cruzio.com
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

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TOPIC: Another reason to hate CFLs ...
http://groups.google.com/group/sci.electronics.repair/t/87ea27a2579f0316?hl=en
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== 1 of 1 ==
Date: Sat, Oct 23 2010 10:59 pm
From: "Geoffrey S. Mendelson"

Arfa Daily wrote:
> As if any more reasons were needed on top of their horrible startup
> characteristics, their ugliness, their sick coloured light, and their
> inability to last for a fraction of the claimed lifetime :-(

Actually I live CFLs. They provide a cheap source of light where I need light
but don't care how bad it looks. For example outisde lighting which is mostly
there so someone sees a light on and prefers to walk somewhere else, if even
just because it messes with their night vision.

I like them for places that I have to have a light on such as my windowless
bathroom. It's cheaper to leave one on 24/7 than have it on a timer.
Especially if I have to get up to use the toilet at 3am when the timer would
have the light off.

Over the years since I first got them in the late 1990's they have gotten
more efficient and finally someone wised up and is making them "warm",
which is close to the color that I can actually see.

The latest ones are brighter per watt, about 30%. I could see that about
a month ago when I replaced a bunch of them. I replace the one in the
bathroom when it goes out (and keep a spare as it usually happens late
at night), the others about once a year, just because.

> Now the other day, the bulb in my Anglepoise bench light failed, and as it
> was the last 60 watt pearl one I had - nowhere stocking such an animal any
> more due to EU ecobollox intervention - I put in a CFL that had come free
> in a cornflake packet or some such nonsense. Once it has warmed up in the
> morning - at least one coffee drinking time needed for this - it seemed to
> work reasonably well. Until, that is, I started trying to identify the
> resistors in my old drawers to move them into the individual value drawers
> in the new location.

We still have plenty of incadescent bulbs for sale here, and they are cheap.
I expect we are the dumping ground for bulbs made in eastern Europe but
can't be sold there. I've bought plenty of them to stock up.

We use them for reading lamps so there are 5 of them still in use in
our house.

I also have a good supply of 12v halogen bulbs, but to be honest, I'm not
sure where the lamp that the fit is. :-)

Although they are long gone on the commercial market, they are still needed
for photgraphic enlargers. 3200k color temperature (about what you are used
to) and pearl or opal finish (very smooth even distribution of light).

Since they were often hung base up printing on the top would become part of
the image, so they had the wattage etc printed on the side, like a vacuum
tube (or valve as you would say).

You can find them if you search the web for suppliers of photgraphic darkroom
equipment, which has become a thriving niche market.

Geoff.

--
Geoffrey S. Mendelson N3OWJ/4X1GM
To help restaurants, as part of the "stimulus package", everyone must order
dessert. As part of the socialized health plan, you are forbidden to eat it. :-)

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