Electronics Forum > Test Equipment
Curve tracer project.
The Radio Shop:
This is the latest project I have been working on in the shop.
For those that have been following Mr Carlson Lab on Patreon you then will have the plans for this.
I will not release the schematic since this is Pauls creation.
The idea of this is to do some testing using the curve tracer.
And use this thread to document the project
The Radio Shop:
I have the tracer board installed and doing some testing.
The oblong circle is a capacitor and looks about right.
The "L" shape wave form is a diode. Looks close as it should.
There are however two problems I have to iron out.
1- way to much gain in this scope. When checking a zener the trace goes completely off screen.
2- as you can see there is a double trace. ( Last picture) This could be from having so much gain, or there is a problem with the scope.
I have not recapped the scope yet but will do so when the parts arrive. Then I can build the dual 15 volt supply and re-cap the scope.
Paul M0BSW:
Hi Buddy, I to am a pateron on Paul's site and building this, I just bought a CRO, not had one for years, I think I may actually buy another, they have more character than the DSO's in my humble opinion and I'm enjoying them again.
The Radio Shop:
--- Quote from: Paul M0BSW on November 24, 2018, 01:14:30 PM ---Hi Buddy, I to am a pateron on Paul's site and building this, I just bought a CRO, not had one for years, I think I may actually buy another, they have more character than the DSO's in my humble opinion and I'm enjoying them again.
--- End quote ---
Hi Paul, good to see you here again.
I agree, an old cro just looks better than a digital unit. I did not give but 10 bucks for this old HP. It only has 500KHz of band width so it was basically useless like it was. So re purposing it to a curve tracer was a plus. Plus I really like the graticule display of the scope.
I saw you post on his Patreon page and have been meaning to speak to you there. Just been so darn busy here.
Thanks for stopping in.
The Radio Shop:
I decided I need to trouble shoot the scope to see why I can not lower the volts per division.
From .005 to .2 signal passes.
From .5 to 20 no signal passes.
I have attached the schematic of channel A .
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