Products > Test Equipment
Show Us Your Curve Tracer
branadic:
I have the updated version KLS 2.0 of DL4JAL's curve tracer, that recently got the upgrade to PIC18F46K80. The board rev2.0 with the improvements is discribed here:
https://www.bartelsos.de/messtechnik/untersuchungen-an-bauteilen/kennlinienschreiber
Attached a measurement of a 2SK170.
-branadic-
David Aurora:
Anybody else got one of these? I picked it up in a deceased estate sale a while back, it seemed to be mid-repair (half the screws missing, cord cut off etc). Haven't been able to find any record of it ever existing, let alone schematics.
I cleaned it up a bit at the time and then kind of forgot about it because it needed all new switches and I couldn't be assed fully disassembling it, but I finally changed them over tonight after work and the thing is now 99% working (the switches were so bad that you kind of had to hold them in place to get any display and even then it was a crapshoot). All that's left to do now is troubleshoot the step generator, it doesn't put out anything on voltage mode.
I've got a Tek 576 arriving soon so I don't imagine I'll bother going much further with this one, but it seems way too nice inside to waste so it'll likely get passed on to my assistant or something if I can work the last bugs out of it
Electro Fan:
New video from W2AEW on curve tracing. As usual from W2AEW his teaching is outstanding; his videos on a scale of 1 to 10 are typically about a 12 to 20 or better for clarity and conciseness.
RoGeorge:
This yellow alligator showed up once, while identifying the type of photodetector from a former punched-card reader. The curve tracer was improvised from a Rigol DG4102 DDS generator, a scrapped transformer and a Rigol DS1054z oscilloscope in XY mode:
The bar of 12 optical sensors from 1975 proved to be made out of NPN phototransistors.
Electro Fan:
RoGeorge - very nice project!
https://www.eevblog.com/forum/testgear/rigol-dp832-power-supply-as-automated-curve-tracer/
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