Author Topic: Jud Williams Model A /Sprague/Lectrotech Curve Tracer  (Read 4186 times)

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Offline DawnTopic starter

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Jud Williams Model A /Sprague/Lectrotech Curve Tracer
« on: September 10, 2014, 11:48:31 pm »
Does anyone have a schematic on this unit? I have a copy of the instruction manual that's been floating on the net for years, but there's nothing about the circuitry or a schematic. Sprague and Lectrotech at some point took over the manufacture and distribution from the original garage operation. I've never seen a copy of the later version manuals by Sprague nor the apparent addition of a Super Beta function to the original design.

Anyone have a schematic or know the origins of this unit?

 

Offline dgminala

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Re: Jud Williams Model A /Sprague/Lectrotech Curve Tracer
« Reply #1 on: March 05, 2015, 01:22:40 am »
Did you find any documentation for your Jud Williams curve tracer?  If not, I might be able to help.  I contacted Jud last year and got some information from him regarding the curve tracer bearing his name (and subsequently, the Sprague brand).
You can find a version of the manual (no schematics) on www.ko4bb.com manual site.  I uploaded a copy of  the manual there.  I have a bit more data (including schematics for a couple different versions) for it, if you're interested.

Cheers,
Dave M
 

Offline EKATRON

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Re: Jud Williams Model A /Sprague/Lectrotech Curve Tracer
« Reply #2 on: July 09, 2017, 05:42:28 pm »
dgminala, how could I get hold of schematics for the Jud Williams Sprague Electrotech model A transistor curve tracer?
 

Offline EKATRON

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Re: Jud Williams Model A /Sprague/Lectrotech Curve Tracer
« Reply #3 on: July 09, 2017, 05:45:49 pm »
Hello, Dawn - Were you ever able to get hold of schematics for the Jud Williams Sprague Electrotech model A transistor curve tracer?
 

Offline xfactor69

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Re: Jud Williams Model A /Sprague/Lectrotech Curve Tracer
« Reply #4 on: April 11, 2023, 08:11:08 pm »
Do you still have a schematic for the Jud Williams curve tracer.  I just got one on ebay and want to dial it in.
Thanks,
-ml
 


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