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| Component tester on oscilloscopes |
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| GreyWoolfe:
--- Quote from: DC5AJ on February 13, 2014, 09:05:22 pm ---Alan W2AEW did a great video about component tester / octopus tester. Check it out: It explains the circuit and shows the resulting patterns of various components, maybe it is interesting for you. --- End quote --- His video has prompted me to build one and it does work well. The only cost was the transformer, I had the resistors I needed. I made a small TH PCB and stuck it in the same enclosure that I had a dual 5VDC PS. :-+ |
| owiecc:
I had one case where it was useful. A big component looking like a diode but not behaving like one. One way quite big resistance, the other way smaller. Diode tester did not think it is a diode. When I connected it to CT you can clearly see the diode IV curve. That was 5kV diode. Forward voltage ~3V, big leakage backwards. IMO a nice feature to have but I could live without it. CT on a Hameg HMO724. Maybe more useful in a school environment. |
| bsco:
I guess it could prove useful....like you said......not a necessity but I am going to go ahead and make one anyway....just to have it...I also repair control boards for a local company who does printing and this could be a help when I want to compare the signatures on IC chip pins as I usually get more that one board of the same type...who knows...it may prove useful and if it don't then it didn't break the bank either... |
| Fraser:
The Huntron Tracker 1005B1S user manual may be of interest and provides a good description of use. http://www.ko4bb.com/Manuals/11)_Stuff_Not_Sorted/4_Miscelaneous/HUNTRON/HUNTRON-1005B1S-Operator.pdf The Service Manual provides excellent detail of the design and how the two channel switching works. http://www.ko4bb.com/Manuals/11)_Stuff_Not_Sorted/4_Miscelaneous/HUNTRON/HUNTRON-1005B1S-Maintenance.pdf I have bought Hameg HM203 scopes (with built in CT) for GBP20 and that makes a pretty cheap self contained component tester ! Manual, including CT usage is here: http://www.hameg.com/downloads/man/HM203-6_english.pdf HM203 Schematics available here: http://elektrotanya.com/hameg_hm203-5_oscilloscope_sch.pdf/download.html http://www.eserviceinfo.com/index.php?what=search2&searchstring=203-6 http://www.schematicsunlimited.com/h/hameg |
| Fraser:
More useful information from Huntron here: http://www.huntron.com/sales-support/appnotes.htm http://www.huntron.com/privatesales/technical/21-1217-2000sptc.pdf Also my comments in a previous thread on the topic are here: https://www.eevblog.com/forum/beginners/dirt-cheap-and-simple-scope-based-component-tester-curve-tracer/msg119338/#msg119338 |
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