Author Topic: Analog meters (Read 2612 times)

FishbonzWV · « **on:** March 18, 2008, 09:45:18 PM »

I've been looking for some analog meters for my two systems for quite a while.

Since there are two systems to outfit and my philosophy is ' if it's free energy lets try to get it free ' (or as cheaply as possible) I do a lot of scrounging around.

I went to a HAM festival / swap meet over the weekend and one fellow had a $3 bin full of old meters.

Top left was $1 and it takes a 2k2 resistor for 15V full deflection - perfect!

Middle top was $2 and all it took was a bit of silicon to glue the glass back in.

The rest were $3 apiece.

Two Tripletts, one Westinghouse, one Barnett and two No names.

I'm so happy!

Fishbonz

Old F · « **Reply #1 on:** March 18, 2008, 05:46:32 PM »

Ham fests are all way good for this kind of stuff

I cant wait for the Dayton Ham fest coming up in May

This will be my 27th straight year

73

N8QJU

Old F

FishbonzWV · « **Reply #2 on:** March 18, 2008, 07:07:45 PM »

Hey Old F,

Are you the same Old F that is on the Yesterdays Tractor forum?

I've been meaning to ask you for quite some time but didn't want to hijack someones thread.

Mines a Ford Jubilee.

Old F · « **Reply #3 on:** March 18, 2008, 07:21:42 PM »

Yes guilty as charged : )

I like old iron

Old F

MyCattMaxx · « **Reply #4 on:** March 18, 2008, 07:45:05 PM »

I am a ham also. Will be at Dayton also. Have a John Deere B and a Farmall MD.

BT Humble · « **Reply #5 on:** March 19, 2008, 04:06:37 PM »

A few years ago I knocked together a little program that will print up customised dial cards for these meters. It's available in my files section here:

http://www.otherpower.com/images/scimages/236/MeterDial.zip

It's written in Visual Basic 6, and if you want to fool around with it here's the source:

http://www.otherpower.com/images/scimages/236/MeterDialSource.zip

BTH

ghurd · « **Reply #6 on:** March 19, 2008, 04:28:29 PM »

Please.

Dayton. Where and when?

I have like 20 pounds of tubes nearly ready for the dumpster.

For 'geeks', they sure can't make their fests easy to find on the net.

G-

Old F · « **Reply #7 on:** March 19, 2008, 05:41:37 PM »

Oh I forgot to add 1958 Masey 65 an a Farmall super H

An here you go ghurd

http://www.hamvention.org

Old F

RogerAS · « **Reply #8 on:** March 19, 2008, 07:33:50 PM »

Hey,

Not a ham but have a Allis B model, and early crank only type. Runs great.

Sorry for the post hijack.

FishbonzWV · « **Reply #9 on:** March 20, 2008, 03:51:20 AM »

Thanks BT!

I remember someone had done this a while back, just not who.

When I get a chance I'll try it out.

Thanks again

Fishbonz

FishbonzWV · « **Reply #10 on:** March 21, 2008, 06:24:39 PM »

Thanks again BT,

Nice easy program to use. You did good.

Sorry about the blurry pix.

BT Humble · « **Reply #11 on:** March 30, 2008, 05:26:38 PM »

That's some nice neat work, I'd say that it's YOU who did good! ;-)

Somebody asked me a while back about adding a feature to it so that you could manually set up a logarithmic meter by specifying individual tick marks and numbers, but I never got around to it. Oops.

BTH

FishbonzWV · « **Reply #12 on:** April 01, 2008, 03:58:03 PM »

Here's another example of BT's program at work.

This was the bottom right meter(Weston)from a VOM. I found through trial and error a 17k5 resistor gave me 22 volts full deflection.

This Triplett was a 1 Amp meter so I cut the internal shunt and added an external one using 18 inches of 14 AWG solid core wire. Started with 24 inches and kept cutting off pieces until the amps matched my fluke meter at 4 Amps. Then I just used white out correction fluid to make the dots disappear and added a zero to the end 1 digit.

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