He runs us through the JFET as amplifier, constant current sink, and variable resistor. He also mentions about the SiC JFET, Silcon Carbie JFETs, which have very low resistance.
@GreatScott runs us through JFETs
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Category Archives: Testing
Electronics Project #28: Space Drop Power Subsystem | Learning Electronics In The Lab With Jay Jay
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This post is part of my video blog and you can find more information about this video.
Silly Job Title: Electron Ambassador. I am the Electron Ambassador!
In this video we figure out how the power subsystem from the Space Drop circuit works. I’m a little confused in the beginning but by the end I understand how it works. The documentation for the circuit we build is here: JJ005.
We use the METCAL PS-900 Soldering Station for soldering.
We use the AiXun H314 Hot Air Gun for heat shrinking.
We use the MUIN Solder Fume Extractor to clear the air.
We use the EEVblog BM2257 Digital Multimeter for continuity testing.
We use the Brother P-Touch D210 Label Maker to label our JJ005 circuit.
We use the Bysameyee Head-Mounted Magnifier for magnification while soldering.
We use the ElectroCookie PCB Prototype Solderable Breadboard to build our circuit on.
We use the Hakko CHP 3C-SA Precision Tweezers for tweezering.
We use the Plato Model 170 Wire Cutter to trim component leads and cut wire.
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! :)
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
Yum Cha 15 Pcs Sandpaper |
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The New License-Free IoT Spectrum: In-Depth Investigation into NR+
The Leaky Faucet | Project 13/30 | Maxitronix 30in1 | Learning Electronics In The Lab With Jay Jay
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This post is part of my video blog and you can find more information about this video.
Silly Job Title: Maker of Videos. I am the Maker of Videos!
In this video we do the 13th project from the Maxitronix 30in1 Electronics Project Lab Kit: The Leaky Faucet.
Here are the timing measurements we took:
| Capacitor | Resistor | Period |
|---|---|---|
| 10 µF | 470 kΩ | 3.05, 3, 2.97, 3.03, 2.98 |
| 10 µF | 100 kΩ | 0.67, 0.6, 0.8 |
| 100 µF | 100 kΩ | 7.02, 7.02, 7.15 |
| 4.7 µF | 100 kΩ | 0.43, 0.35, 0.39 |
| 4.7 µF | 470 kΩ | 1.76, 1.5, 1.56 |
We use the Rigol MSO5074 Mixed Signal Oscilloscope to look for the oscillating signal.
We use the UNI-T UTi260B Thermal Imager to check the thermals (nothing interesting to report).
We use the Carpenter Mechanical Pencil to take our notes.
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! :)
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
Yum Cha 16MP USB Camera |
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Learning the Art of Electronics: 1L.4.3 10 mA Ammeter Redux | In The Lab With Jay Jay
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This post is part of my video blog and you can find more information about this video.
Silly Job Title: Electronics Guru. I am the Electronics Guru!
In this video we continue to work our way through Learning the Art of Electronics. In this video we return to 1L Lab: DC Circuits and revisit lab 1L.4.3 in which we made a 10 mA ammeter. This time around we do a better job of it, build two ammeters from different movements, and compare our results with an actual known-good ammeter.
As promised here are the notes:
We use the Tenma 72-10505 Bench Power Supply to provide 5 V for testing.
We use the EEVblog BM2257 Digital Multimeter to measure our resistor and as our reference ammeter.
We use the Sharp EL-546L Scientific Calculator to calculate our shunt resistance.
We use the Multicomp Pro MP701033 Resistor Decade Box as our shunt resistor.
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 mA to my spell check.
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
Yum Cha Universal Handheld Wire Stripper notes |
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Salvage Power Supply Parts Bipolar Supply
I like this bloke’s modular approach.
How to Find and Fix a Dead Battery Cell on KuKirin M4 Pro
Music from a Pencil | Project 12/30 | Maxitronix 30in1 | In The Lab With Jay Jay
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This post is part of my video blog and you can find more information about this video.
Silly Job Title: Energy Maestro. I am the Energy Maestro!
In this video we do the 12th project from the Maxitronix 30in1 Electronics Project Lab Kit: Music from a Pencil.
We use the Rigol MSO5074 Mixed Signal Oscilloscope to investigate our oscillator’s waveform.
We use the METCAL PS-900 Soldering Station to solder our cables to the alligator clips.
We use the MUIN Solder Fume Extractor to clear the air.
We use the EEVblog BM2257 Digital Multimeter to measure resistance.
We use the Multicomp Pro MP701033 Resistor Decade Box as a variable resistor.
We use the Carpenter Mechanical Pencil to draw our pencil resistor.
We use the Plato Model 170 Wire Cutter to cut our cables.
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 MUIN to my spell check.
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
Yum Cha 6pcs Wire Brush notes |
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Making an automatic putting club
lol. This is over the top. :)
Interlude #20: Making Banana Jack to Female DuPont Cables | In The Lab With Jay Jay
You can support this channel on Patreon: patreon.com/JohnElliotV
This post is part of my video blog and you can find more information about this video.
Silly Job Title: Relay Renegade. I am the Relay Renegade!
In this video we make a few cables for connecting our cheapo DT830B digital multimeters to our test circuits via pin-header. The cables have banana jacks on one end and female DuPont connections on the other end.
We use the METCAL PS-900 Soldering Station for soldering.
We use the AiXun H314 Hot Air Gun for heat shrink.
We use the Fluke 17B+ Digital Multimeter to test our cables.
We use the Hakko CHP 3C-SA Precision Tweezers for tweezering.
We use the Plato Model 170 Wire Cutter to cut, cut, cut.
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 AliExpress, multimeters, and Patreon to my spell check.
Following is a product I use picked at random from my collection which may appear in my videos. Clicking through on this to find and click on the green affiliate links before purchasing from eBay or AliExpress is a great way to support the channel at no cost to you. Thanks!
EXAR XR2206 Signal Generator notes |
Let’s go shopping!