John Coleman ARS WA5BXO wrote:
Well then that proves that the movement is indeed a 1ma movement.
Now you need to remove the 500K ohm if you are going to be using it with an
external 5Meg else you will be 10 percent off in measurments. You could
also leave the 500K inside, and replace the
Radio] Component ID please
John E. Coleman (ARS WA5BXO) wrote:
> Jack,
> Check the meter with another meter and see if it is reading 1ma and is
> accurate enough.
Actually, with the new 500k in the meter, it reads 10v with 10v in.
Couldn't think of anything with a higher DC voltag
John E. Coleman (ARS WA5BXO) wrote:
Jack,
Check the meter with another meter and see if it is reading 1ma and is
accurate enough.
Actually, with the new 500k in the meter, it reads 10v with 10v in.
Couldn't think of anything with a higher DC voltage to calibrate with
but at least is is func
meter will
read 500.
Good Luck
John, WA5BXO
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jack Schmidling
Sent: Monday, December 11, 2006 5:32 PM
To: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] Component ID please
John E. Coleman
John E. Coleman (ARS WA5BXO) wrote:
>So perhaps the
other device was another resistor to adjust the value so that the meter is
more accurate than it was with just the one resistor.
Well, the bands are black (background yellow) blue. Which would be 17
meg but it is also open and it is unlikely
Rick Brashear wrote:
Dang! You're right again, John! I now see the series wiring. Good
call.
Rick/K5IZ
John E. Coleman (ARS WA5BXO) wrote:
Forget it, Rick. that guy walks through 'complicated' electronic
formulas like a cow walks through grass.
He's -real- good!
--
73, etc
_
Dang! You're right again, John! I now see the series wiring. Good call.
Rick/K5IZ
John E. Coleman (ARS WA5BXO) wrote:
No, look again, it is internal series multiplier, so that the meter will
read volts with a direct hookup. If this is a 0-500 Volt meter as the
picture seems to indicate, and
: Discussion of AM Radio in the Amateur Service
Subject: Re: [AMRadio] Component ID please
Jack...
That looks more like a shunt to me.
Rick
Jack Schmidling wrote:
> The HV meter on my supply does not work and the series resistor inside
> seems to be open. No problem but there is another com
Jack...
That looks more like a shunt to me.
Rick
Jack Schmidling wrote:
The HV meter on my supply does not work and the series resistor inside
seems to be open. No problem but there is another component across
the resistor that I have never seen before and assume is a cap but
don't know.. it
The HV meter on my supply does not work and the series resistor inside
seems to be open. No problem but there is another component across the
resistor that I have never seen before and assume is a cap but don't
know.. it also reads open.
I posted a pic at http://schmidling.com/meter.jpg for I
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