As a former avionics tech in the USAF, I dont bother with trying to figure
it out.. I just order the voltage reducers in Jim Carters catalog when I
need one. I assume he knows what I need. Its handy to have the background to
figure it out, but why when you can just ask right here?
Brings me to the reason I sent this message... I have a voltage reducer for
the points and one for the heater motor and gas gauge.. but I am wondering
about the 6 volt original horn that comes on the 50 3100's. If you just pump
12 volts thru it, it sounds like crap. Could someone kindly just come out
and tell me what I need to reduce the horn voltage from 12 to 6 so it sounds
right?
Its funny.. in following the voltage reducer thread, lots of very good info
has come to light.. I love Bills home page on the subject.. but for most
readers I imagine learning electrical theory isnt why the bought the ole
truck.. I imagine they.. like me ask questions here to get the actual
answer. By giving the specs of the heater motor to us, we can probably
ascertain the correct resistor and eliminate the huge debate. I know what I
appreciate the most about this list besides the really cool people we have
here is the actual answer to the question asked. It saves me lots time not
having to re-invent the wheel by utilizing the expertise of those who have
been there. Thanks everyone! :)
----- Original Message -----
From: "Tom Burt" <tburt@hirose.com>
To: <MarkNoakes@aol.com>; <oletrucks@autox.team.net>
Sent: Wednesday, December 22, 1999 6:23 PM
Subject: RE: Re: [oletrucks] Voltage reducer-->measuring current
> Seems to me I remember using clamp-on probe when doing electrical
> characterization tests on military DC power converters some time ago. It
> worked quite well, but was with no doubt an expensive accessory.
>
> Tom B. '57 3200 Stepside
>
> -----Original Message-----
> From: owner-oletrucks@autox.team.net
> [mailto:owner-oletrucks@autox.team.net]On Behalf Of MarkNoakes@aol.com
> Sent: Wednesday, December 22, 1999 3:51 PM
> To: oletrucks@autox.team.net
> Subject: Re: Re: [oletrucks] Voltage reducer-->measuring current
>
>
>
> In a message dated 12/22/99 6:47:35 PM, you wrote:
>
> <<Mark
> I've been using a DC clamp on at work since 1993, I've used it in DC
> rectified
> (power supply) as well as pure DC (battery driven) circuits with good
> accuracy as
> compared to the shunt method you are mentioning. The clamp is a Tektronix
> Model
> A622. We also have a HP DC ammeter that uses a clamp on probe that has
been
> around since at least the early 70's. It uses tubes so it's pretty old.
> >>
>
> Live and learn. . .thanks for the info; I'll have to check into how
they're
> doing that
> -->hall effect sensor maybe? Induced DC coil voltage would only be a
> transient.
>
> I have a new Tektronix handheld scope and a new Fluke multimeter and they
> both do series current measurement. . .haven't checked either for an
> available probe for DC current. . .looks like I should.
>
> Not sure how I missed this one, since this is my field, but I did.
>
> Thanks,
>
> Mark Noakes
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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