Learning the Art of Electronics: Fig-1N.29: DVM reading departs from ideal; we can infer Rin-DVM | In The Lab

This post is part of my video blog and you can find more information about this video.

You can support this channel on Patreon: patreon.com/JohnElliotV

Silly Job Title: Systems Architect. I am the Systems Architect!

In this video we keep on working through Learning the Art of Electronics chapter 1N DC Circuits. Today’s circuits are from Figure 1N.25: Set of similar voltage dividers: same Vthev, differing Rthev and Fig-1N.29: DVM reading departs from ideal; we can infer Rin-DVM.

We use the Tenma 72-10505 Bench Power Supply for a 20V power supply.

We use the EEVblog BM2257 Digital Multimeter as our DVM for measuring voltage.

We use the Sharp EL-546L Scientific Calculator to crunch some numbers.

We use the Multicomp Pro MP701033 Resistor Decade Box to provide the resistances used in our circuits.

We use the WilliamKlein Music Stand to hold our textbook.

We use the Carpenter Mechanical Pencil to make our notes.

We use the Hakko CHP 3C-SA Precision Tweezers for precision work.

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!

OULLX NSS-681HDMI-RJ45 Network Cable TesterThis is an image of the product.notes

Let’s go shopping!

Learning the Art of Electronics: Fig-1N.24: Applying the Thévenin model | In The Lab With Jay Jay

This post is part of my video blog and you can find more information about this video over here.

You can support this channel on Patreon: patreon.com/JohnElliotV

Silly Job Title: Switch Switcher.

In this video we build two circuits for Learning the Art of Electronics.

The pre-reading for today is up to and including page 18 of the course work. So if you have the book try to get that reading done.

In this video we test a circuit and its Thévenin model to see that they behave as expected. They do! But I’m still trying to get my head around all of the details…

I mention about my decade boxes. The good one is this one: Multicomp Pro MP701033 Resistor Box (I have ordered two more of these) and the crappy ones are these ones: Yum Cha J15026-2 6-Knob Resistor Box.

I also mention about the analog multimeters, this is the crappy one I have: Yum Cha MF-110A Analog VOM Handheld Multimeter and this is the slightly less crap one which I have on order: Pro’sKit MT-2207-C Analog VOM Handheld Multimeter.

In the video:

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

We use the EEVblog BM2257 Digital Multimeter to get our voltage and current readings.

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

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

We use the Scotch Titanium Scissors to cut things.

We use the Carpenter Mechanical Pencil for writing our notes.

We use the Hakko CHP 3C-SA Precision Tweezers to do precision work.

We use the Plato Model 170 Wire Cutter to trim our leads and wires.

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!

JST XH2.54 Connector KitThis is an image of the product.

Let’s go shopping!

Learning the Art of Electronics: Fig-1N.23: Hypothetical Voltage Divider | In The Lab With Jay Jay

This post is part of my video blog and you can find more information about this video over here.

You can support this channel on Patreon: patreon.com/JohnElliotV

Silly Job Title: Operation Manager.

In this video we build our first circuits for Learning the Art of Electronics. The introductory video for this project is here: Introducing Learning the Art of Electronics.

The pre-reading for today’s project is up to page 17 of the course work. If you want to dig deeper there is extra reading to be found on the project home page. Note that some of my notes on the ITL Wiki are only available to people who support me on Patreon (see above).

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

We use the EEVblog BM2257 Digital Multimeter to test voltages and currents.

We use the Riden RD6006 Bench Power Supplies to power our test circuits.

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

We use the WilliamKlein Music Stand to hold our book.

We use the Scotch Titanium Scissors to cut things.

We use the Carpenter Mechanical Pencil to make our notes.

We use the Hakko CHP 3C-SA Precision Tweezers for precision maneuvering.

We use the Plato Model 170 Wire Cutter to cut our wires.

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

Following are some happy snaps of the results:





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 9 in 1 Air Quality MeterThis is an image of the product.

Let’s go shopping!

Electronics Project #16: Making Power Cables for Learning the Art of Electronics | In The Lab

This post is part of my video blog and you can find more information about this video over here.

You can support this channel on Patreon: patreon.com/JohnElliotV

Silly Job Title: Transistor Troubadour.

In this video we make some power cables which we will be using when we start to make the circuits for Learning the Art of Electronics. In particular we make two banana jack to DC barrel male and three DC barrel female to JST PH2.0 male. I also accidentally made a DC barrel male to JST PH2.0 but I’m not planning to use that.

The ElectroCookie printed circuit boards (PCBs) I will be using for the LAoE projects are these:

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

We use the EEVblog BM2257 Digital Multimeter to test continuity.

We use the Horusdy Soldering Station with Hot Air Gun to shrink our head shrink.

We use the Hakko CHP 3C-SA Precision Tweezers for working the wire.

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

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 4pcs 30mm Deep Hole PenThis is an image of the product.notes

Let’s go shopping!

Electronics Project #15: Making Project Board for Learning the Art of Electronics | In The Lab

This post is part of my video blog and you can find more information about this video over here.

You can support this channel on Patreon: patreon.com/JohnElliotV

Silly Job Title: Joule Juggler.

In this video we make a project board for use in our Learning the Art of Electronics projects.

In the beginning I mention a few things which have arrived from AliExpress:

We use one of the ElectroCookie Large PCB Prototype Boards and attach female pin header and male pin header. The flux I use is AMTECH NC-559-ASM and my solder is Loctite (Multicore) 60/40 C511 5C 0.56mm.

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

We use the Fluke 17B+ Digital Multimeter for continuity testing.

We use the Horusdy Soldering Station with Hot Air Gun to try to melt our flux, unsuccessfully. It turned out the problem I was having with the flux wasn’t that it had hardened in its tube, but that the nozzle had become clogged. When I cleared the nozzle the trouble I was having dispensing the flux went away and the flux flowed freely.

We use the Hakko CHP 3C-SA Precision Tweezers to place our pin header.

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

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!

FNIRSI DC580 Power ModuleThis is an image of the product.

Let’s go shopping!

Interlude #17: Another False Start for Learning the Art of Electronics | In The Lab With Jay Jay

This post is part of my video blog and you can find more information about this video over here.

You can support this channel on Patreon: patreon.com/JohnElliotV

Silly Job Title: Current Curator.

In this video we make our second false start on Learning the Art of Electronics.

I mention about Make: magazine.

The power electronics YouTuber I mention is @ElectrArc240.

We consider using the Maxitronix 300in1 Electronics Project Lab Kit to for our project but we end up settling for a smaller breadboard.

We use the UNI-T UTi260B Thermal Imager to investigate the thermal properties of our powered circuits.

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

We use the EEVblog BM2257 Digital Multimeter to measure voltage and current.

We use the EEVblog BM036 Digital Multimeter to measure current.

We use the Peak Electronic Design Atlas DCA75 Pro Semiconductor Analyzer to examine our diodes.

We use the ANENG AN-999S Bench Multimeter to measure current.

We use the Riden RD6006 Bench Power Supply to provide power for our experiments.

We use the Carpenter Mechanical Pencil for writing out notes.

We use the Hakko CHP 3C-SA Precision Tweezers for working with small components.

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 6pcs Wire BrushThis is an image of the product.notes

Let’s go shopping!

Channel News #8: Update Regarding Upcoming Projects and Videos | In The Lab With Jay Jay

This post is part of my video blog and you can find more information about this video over here.

You can support this channel on Patreon: patreon.com/JohnElliotV

Silly Job Title: Capacitor Captain.

In this video I make excuses for why you haven’t had a video from me for two weeks. Excuses, excuses.

It is still my ambition to release three videos per week, on Tuesday, Thursday, and Saturday.

As I mention in the video I have been working away on the Learning the Art of Electronics project and making notes for all five of the referenced books but I still have a heap more work to do. Further, I’ve been working through the first edition of Learning the Art of Electronics because my second edition hasn’t arrived yet. So today I bit the bullet and canceled my order of the second edition from Amazon AU (I’ve been waiting since January) and placed a new order with Amazon US so my second edition should now be arriving by May 24, later this week.

I have ordered some bits and pieces for my Logitech BRIO web cam including this stand, so I should be able to start making maths videos on my channel soon. But it will be very basic high school maths. If you want more serious maths I would be happy to recommend my friend who makes advanced maths videos on his channel Learning as a hobby.

Speaking of my mate on the Learning as a hobby channel he recently scored a copy of the CDROM that comes with Principles of Electronic Circuits 2ed and is making preparations to send me a copy (either as an ISO or in the snail mail), so standby for more on that. This is a super exciting development because I had concluded that finding a copy of this CDROM was going to be impossible, but here it is!

The long projects that I’m working on which are presently brewing include:

  • Silicon Chip and Jaycar Mini Project JMP003
  • Demo of EEVblog BM2257 multimeter
  • Old book teardown of Electric Circuits
  • Project #1 from Maxitronix 30in1
  • Lab #1 from Learning the Art of Electronics

I have made a start on all of the above but it’s going to take me some time to finish them all. In the mean time I am going to try to get some smaller projects done so that I can hit my target of three videos per week.

And that brings you up to date with news from the channel.

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 395nm UV LampThis is an image of the product.notes

Let’s go shopping!