|[AMRadio] better meter, same price|
Jim Isbell, W5JAI
jim.isbell at gmail.com
Thu Sep 24 17:50:57 EDT 2009
Have you tried the Yellow one? I have some of both and the Red ones
seem to be the more durable. But at $2.99 each I dont realy worry
about having one blow because usually several of the scales are
usually still usable. I mark the meter as to its defective scales,
throw it in a drawer to wait until I need a panel meter. I go to the
drawer and find one on which the desired scale is still functioning
and build it into the box. Free digital panel meters!!!
On Thu, Sep 24, 2009 at 2:50 PM, Greg Mijal <bluebirdtele at embarqmail.com> wrote:
> My experience with the little red wonders have been mixed. They will blow
> if you try to read large amounts of current. Also, on the highest voltage
> range there was a 50 v dc difference between the two meters I was using to
> check out a plate supply. I think the manufacturer was more interested in
> low voltage, low current measurents and didn't really build the unit to
> handle tube gear sized power.
> The Radio Shack $29.99 auto ranging meter is worse.
> Very slow to auto-range and intermittant operation. Blows fuses frequently
> I just bought a $20 DMM from Sears and so far, it's seems to be ok.
> Kinston NC
> ----- Original Message ----- From: "Jim Isbell, W5JAI"
> <jim.isbell at gmail.com>
> To: "Discussion of AM Radio in the Amateur Service"
> <amradio at mailman.qth.net>
> Sent: Thursday, September 24, 2009 3:01 PM
> Subject: [AMRadio] better meter, same price
>> The $2.99 meter at Harbor freight has removable leads, 1000VDC and
>> 750VAC ranges, Ohms200 to 2000K, 10ADC and 200maAC and includes a
>> transistor tester and back lighting. I usually buy 5 each time I am
>> in there and I sometimes use them as panel meters in projects if there
>> is room behind the panel. Just set them to the scale you want, mount
>> behind a rectangular cutout to view the face, use a 9V zener to grab a
>> little power from the main circuit of the project....or if you dont
>> mind changing the battery, leave it as is. Its cheaper than you can
>> buy a panel meter and you can set it to what ever range you want and
>> label it below the viewing port as to what it is reading. Save the
>> leads for when you connect your bench unit to a high voltage circuit
>> with it in AMPS mode and burn up a lead. .......Dont ask how I know.
>> BTW, its fused so only the lead takes the hit.
>> Jim Isbell
>> "If you are not living on the edge, well then,
>> you are just taking up too much space."
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"If you are not living on the edge, well then,
you are just taking up too much space."
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