Category Archives: Science

The Transistor and “Amplification” | Project 6/30 | Maxitronix 30in1 | In The Lab With Jay Jay

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Silly Job Title: Switch Sleuth. I am the Switch Sleuth!

In this video we continue to work through our Maxitronix 30in1, today doing project #6: The Transistor and “Amplification”. In this project we see how an NPN transistor acts as an amplifier.

The HFR trigger coupling I use at the end of the video is called High Frequency Reject, it hides high frequency components from the triggering system and in this case fixed our triggering issue. I haven’t used HFR trigger coupling before. The Rigol user manual for the MSO5000 series doesn’t explain the feature, it just says: “HFR: rejects the high frequency components”.

We use the Rigol MSO5074 Mixed Signal Oscilloscope to examine our input and output voltages, and also to provide a test sine wave for input.

We use the UNI-T UTi260B Thermal Imager to look at the thermals, but there wasn’t anything really to see.

We use the UNI-T UTG962E Signal Generator to provide an input signal, but we couldn’t get it to work properly so we used the signal generate from the scope instead.

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

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Learning the Art of Electronics: 1L.3 Voltage divider | Learning Electronics In The Lab With Jay Jay

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Silly Job Title: Note Taker. I am the Note Taker!

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 voltage divider.

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

We use the Riden RD6006 Bench Power Supply for 15V power.

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

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

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

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

We use the Multicomp Pro MP701033 Resistor Decade Box for variable resistance.

We use the WilliamKlein Music Stand to hold our textbook.

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

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.

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Module Monday #8: HW-038 Water Level Sensor Module | Learning Electronics In The Lab With Jay Jay

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Silly Job Title: Electronics Guy. I am the Electronics Guy!

Today is Module Monday.

In this video we take a look at the 1pcs Rain Water Level Sensor Module Detection Liquid Surface Depth Height For Arduino.

The code for this Arduino sketch is here: 2025-11-24-HW-038-Water-Level.ino.

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Module Monday #7: HW-028 Rain Drops Sensor Module | Learning Electronics In The Lab With Jay Jay

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Silly Job Title: Bench Master. I am the Bench Master!

In this video we take a look at the HW-028 Rain Drops sensor module: Separate PCB Board Raindrop Module Sensor Rising Water Level Detection Module Raindrop Sensor Board. Project doco is here: HW-028.

We found some instructions and tutorials, including these:

Also we noted the use of the LM393 comparator on the module.

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The Transistor, an Electronic “Trigger” | Project 5/30 | Maxitronix 30in1 | In The Lab With Jay Jay

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Silly Job Title: Power Provider. I am the Power Provider!

In this video we continue to work through our Maxitronix 30in1, today doing project #5: The Transistor, an Electronic “Trigger”. In this project we see how an NPN transistor works.

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Electronics Project #21: DIY Telegraph Machine | Learning Electronics In The Lab With Jay Jay

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Silly Job Title: Joule Juggler. I am the Joule Juggler!

In this video we assemble the Children’s Science Technology Small Production Diy Telegraph Machine in the Science Experiment Equipment Stem Education Model.

The instructions were easy enough to follow, given they are in Chinese! We get the two circuits working perfectly. Really impressed with this one, it works like a charm! Didn’t do any range testing or what not, I’m going to do this one again when my little people come to visit.

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Old Book Teardown #17: Encyclopedia of Electronic Circuits Volume 4 (1992) | In The Lab

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Silly Job Title: Capacitor Captain. I am the Capacitor Captain!

In this video we take a look inside Encyclopedia of Electronic Circuits Volume 4 by Rudolf F. Graf and William Sheets.

We noted while going through the book that πP is short for “microprocessor”, or, essentially what we’d just call a CPU these days.

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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 UV Curing LightThis is an image of the product.notes

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