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Silly Job Title: Switch Sleuth. I am the Switch Sleuth!
In this video we continue working through Learning the Art of Electronics. Today we don’t do any course work, rather we do two exercises from the text, AoE ex 2.9 and 2.10 on page 86, and make a BJT-based current source as described in AoE Figure 2.32 on page 87.
These are the results I got as I varied the load resistance:
| RL Ω | VL V | IL µA | VBE V |
| 1 | 0.06 | 0.0 | -0.746 |
| 10 | 0.18 | 0.0 | -0.745 |
| 100 | 1.21 | 0.0 | -0.740 |
| 1k | 5.41 | 0.0 | -0.699 |
| 10k | 7.54 | 4.9 | 1.145 |
| 100k | 7.79 | 4.8 | 1.598 |
| 1M | 7.88 | 4.9 | 1.637 |
| 10M | 7.96 | 5.0 | 1.641 |
We use the METCAL PS-900 Soldering Station for soldering.
We use the AiXun H314 Hot Air Gun for heat shrink.
We use the MUIN Solder Fume Extractor for fume extraction.
We use the Riden RD6006 Bench Power Supply for 10 V power input.
We use the EEVblog BM2257 Digital Multimeter to take measurements.
We use the Fluke 17B+ Digital Multimeter to take measurements.
We use the Peak Electronic Design Atlas DCA75 Pro Semiconductor Analyzer to check our NPN transistor pin out.
We use the Sharp EL-546L Scientific Calculator to crunch some numbers.
We use the ElectroCookie PCB Prototype Solderable Breadboard to build our circuits on.
We use the Multicomp Pro MP701033 Resistor Decade Box as a variable load resistor.
We use the Hakko CHP 3C-SA Precision Tweezers for tweezering.
We use the Plato Model 170 Wire Cutter to trim component leads.
We use the Kaisi S-160 45x30cm Repair Mat as our workspace.
Thanks very much for watching! And please remember to hit like and subscribe! :)
p.s. today I added AoE to my spell check.
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Yum Cha Stainless Steel Spudger![]() |
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