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| tubularnut:
--- Quote from: Anthocyanina on March 18, 2021, 04:54:52 am ---Oooh, that makes sense. I have a 12-0-12 transformer that i would like to use for this. should i then use +9v and -9v regulators? Sorry if this shouldn't be the place to ask these questions, thought to ask since it's related to a curve tracer project! Thank you! --- End quote --- If you use one half of the 12v-0-12v(i.e 0-12v) I think you should be able to swap it directly in place of the 0-9v transformer. The documentation for the tracer refers regularly to use of the unregulated supply. |
| khutch004:
A uTracer kit plus an old tube tester: (picture will follow when I figure out how to do that!) |
| Electro Fan:
--- Quote from: khutch004 on March 18, 2021, 07:39:08 pm ---A uTracer kit plus an old tube tester: (picture will follow when I figure out how to do that!) --- End quote --- Thanks for posting. That caused me to look up the uTracer. The comments from the designer are pretty neat as he walks through his thinking on evolving the design to higher voltage. https://www.dos4ever.com/uTracerlog6/tubetester6.html |
| THDplusN_bad:
Good Day, @Ground loop, I totally agree that the Heathkit IT-1121/3121 is a joy to work with. Both types are virtual identical, but have different colours and front panel knobs. I have repaired my unit back in 2014, and modified it with BNC-output connectors for the outputs to the oscilloscope (to replace the 4mm/banana connectors), added a fuse holder for base step currents with a "fuse fail" indicator lamp and a custom scale. I have also made a simple adapter with a ZIF-socket for the A/B testing of components, which has proven its value. Matching transistors is a joy with this. :-+ Photos attached. I also enjoy using a Tektronix 5CT1N (basically the Tektronix 7CT1N's little brother for the Tektronix 51xx/54xx oscilloscopes). And the latest addition to my labs is an Agilent N3280A DC component tester. More of the latter soon... Cheers, THDplusN_bad |
| jh15:
I have one (575) in top shape, what is the problem with yours? In college, there was a brand new one, and I really liked the manual that was under that top compartment 0n the cabinet. Can't find one anywhere. |
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