Learning the Art of Electronics: 1S Supplementary Notes: Investigating Thevenin equivalent of voltage divider | In The Lab

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: Luminary Luminar. I am the Luminary Luminar!

In this video we continue to work our way through Learning the Art of Electronics. In this video we finish 1S Supplementary Notes: Resistors, Voltage, Current and do Exercise 1.10 from The Art of Electronics which has us investigating a voltage divider.

In this video I recommend to you the book Schaum’s Outline of Basic Circuit Analysis, 2nd Edition and Gary Tuttle’s website gtuttle.net where you can find Thevenin & Norton practice problems.

We use the METCAL PS-900 Soldering Station for soldering.

We use the AiXun H314 Hot Air Gun for heat shrinking.

We use the Pro’sKit SS-331H Desoldering Pump to fix up some of our mistakes.

We use the Tenma 72-10505 Bench Power Supply to provide 15 and 30 V DC to our circuits.

We use the EEVblog BM2257 Digital Multimeter to measure voltage.

We use the Fluke 17B+ Digital Multimeter to measure current.

We use eight of the cheapo Yum Cha DT830B Digital Multimeters as ammeters and voltmeters.

We use the Brother P-Touch D210 Label Maker to label our circuit.

We use the Sharp EL-546L Scientific Calculator to do some basic calculations.

We use the Bysameyee Head-Mounted Magnifier to light up our life.

We use the nmsafety Nitrile Gloves to protect our fingers.

We use the ElectroCookie PCB Prototype Solderable Breadboard to make our circuit on.

We use the WilliamKlein Music Stand to hold our tome.

We use the Scotch Titanium Scissors to snip, snip, snip.

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 Luminar, Pro’sKit, Desoldering, Tenma, Yum Cha, Multimeters, Bysameyee, nmsafety, ElectroCookie, Solderable, WilliamKlein, and Hakko 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 10pcs Glue Removal Razor BladesThis is an image of the product.

Let’s go shopping!

Interlude #19: Making Power Cables for FNIRSI SG-002 Current Source | 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: Note Taker. I am the Note Taker!

In this video we make some power cables for use with my FNIRSI SG-002 Signal Generator. I use these as a current source in my experiments. The power cables I required are DC barrel female sockets into banana jacks.

I am getting ready to build some circuits to test Thevenin equivalent circuits which I am learning more about over here: Thevenin & Norton practice problems.

We use the METCAL PS-900 Soldering Station for soldering.

We use the AiXun H314 Hot Air Gun to shrink the heat shrink.

We use the EEVblog BM2257 Digital Multimeter to test the cables.

We use the Multicomp Pro MP701033 Resistor Decade Box to explain how I plan to use these new cables.

We use the Plato Model 170 Wire Cutter to cut the cables.

We use the Kaisi S-160 45x30cm Repair Mat as my workspace.

Thanks very much for watching! And please remember to hit like and subscribe! :)

p.s. today I added Thevenin, METCAL, AiXun, and Multicomp 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 5 in 1 Air Quality MeterThis is an image of the product.

Let’s go shopping!

The Beacon Light | Project 11/30 | Maxitronix 30in1 | Learning Electronics 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: Transistor Troubadour. I am the Transistor Troubadour!

In this video we do the 11th project from the Maxitronix 30in1 Electronics Project Lab Kit: The Beacon Light.

We use the Rigol MSO5074 Mixed Signal Oscilloscope to examine the waveform.

We use the UNI-T UTi260B Thermal Imager to check the thermals (there wasn’t much to see).

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!

MECHANIC Hard BrushThis is an image of the product.

Let’s go shopping!

Learning the Art of Electronics: 1L.7 Oscilloscope and function generator | 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: Spark Slinger. I am the Spark Slinger!

In this video we continue to work our way through Learning the Art of Electronics. In this video we finish 1L Lab: DC Circuits by learning how to use our oscilloscope and function generator.

We use the Rigol MSO5074 Mixed Signal Oscilloscope as our oscilloscope and we use the UNI-T UTG962E Signal Generator as our function generator.

Thanks very much for watching! And please remember to hit like and subscribe! :)

p.s. today I added slinger 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 Razor BladesThis is an image of the product.

Let’s go shopping!

The Highs and Lows of Oscillation | Project 10/30 | Maxitronix 30in1 | 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: Volt Vanguard. I am the Volt Vanguard!

In this video we do the 10th project from the Maxitronix 30in1 Electronics Project Lab Kit: The Highs and Lows of Oscillation.

The spreadsheet with our measurements is here: Maxitronix-30in1-10.ods.

We use the Rigol MSO5074 Mixed Signal Oscilloscope to measure the period of our circuit’s oscillations.

We use the UNI-T UTi260B Thermal Imager to check the thermal properties of our circuit. There was nothing exciting to see.

We use the Carpenter Mechanical Pencil to take 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! :)

p.s. today I added Rigol and Imager 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 CrowbarThis is an image of the product.

Let’s go shopping!

Learning the Art of Electronics: 1L.6 I versus V for some mystery boxes | 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: Code Warrior. I am the Code Warrior!

In this video we continue to work our way through Learning the Art of Electronics. In this video we continue with 1L Lab: DC Circuits and investigate two mystery boxes.

The values we measure in this video are available in this spreadsheet: LAoE-01L.6.ods.

We use the METCAL PS-900 Soldering Station for soldering.

We use the AiXun H314 Hot Air Gun for heat shrink.

We use the Riden RD6006 Bench Power Supply to provide test voltages of 0.1 V through 10 V.

We use the EEVblog BM2257 Digital Multimeter to measure current.

We use the EEVblog BM036 Digital Multimeter to measure current.

We use the Fluke 17B+ Digital Multimeter to measure voltage.

We use the Brother P-Touch D210 Label Maker to make labels.

We use the WilliamKlein Music Stand to hold the text book.

We use the Carpenter Mechanical Pencil to make notes.

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 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 Corner CutterThis is an image of the product.

Let’s go shopping!

Learning the Art of Electronics: 1L.5 The Diode | Learning Electronics 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: Terminal Tactician. I am the Terminal Tactician!

In this video we continue to work our way through Learning the Art of Electronics. In this video we continue with 1L Lab: DC Circuits and test a 1N914 diode.

The circuit we build is this:

LAoE-Fig-1L.8 Diode VI measuring circuit.

And the charts we make are these:

LAoE-Fig-1L.9-linear Diode I versus V: linear plot.

LAoE-Fig-1L.9-lin-log Diode I versus V: lin-log plot.

This demonstrates that as we increase the voltage into our diode the current increases exponentially.

We reverse the polarity of the diode to see what happens and we observe that only a very small leakage current of 0.4 µA flows.

We use the Riden RD6006 Bench Power Supply to supply 5V for our test circuit.

We use the EEVblog BM2257 Digital Multimeter to measure voltage.

We use the Fluke 17B+ Digital Multimeter to measure current.

We use the Carpenter Mechanical Pencil to make 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! :)

p.s. today I added Riden, EEVblog, Kaisi, and Multimeter, 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 4K HDMI USB 3.0 HDMI To USB AdapterThis is an image of the product.

Let’s go shopping!

The “Secret Code” Key | Project 9/30 | Maxitronix 30in1 | 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: Earth Grounder. I am the Earth Grounder!

In this video we do the 9th project from the Maxitronix 30in1 Electronics Project Lab Kit: The “Secret Code” Key.

We use the Rigol MSO5074 Mixed Signal Oscilloscope to examine the buzzer tone signal.

We use the UNI-T UTi260B Thermal Imager to check thermals (there are none to speak of).

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 Guitar String RulerThis is an image of the product.

Let’s go shopping!

Learning the Art of Electronics: 1L.4.3 10 mA Ammeter | 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: Electron Herder. I am the Electron Herder!

In this video we continue to work our way through Learning the Art of Electronics. In this video we continue with 1L Lab: DC Circuits and make a 10 mA ammeter with our meter movement.

We use the 5V LED we made last weekend to test our ammeter.

We use the Riden RD6006 Bench Power Supply to power our test circuit.

We use the EEVblog BM2257 Digital Multimeter to measure the resistance of our 100 µA meter movement.

We use the Multicomp Pro MP701033 Resistor Decade Box for our 23Ω shunt resistor.

We use the Carpenter Mechanical Pencil to take 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! :)

p.s. if you’d like to see the making of the 5V LED circuit we used to test our ammeter, that is here: Electronics Project #25: Variable Brightness LED for Testing Ammeter | In The Lab With Jay Jay.


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!

DAZZLEEX 20pcs Precision Drill BitsThis is an image of the product.

Let’s go shopping!