Old Book Teardown #16: Encyclopedia of Electronic Circuits Volume 3 (1991) | In The Lab

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Silly Job Title: Prime Hack. I am the Prime Hack!

In this video we take a look inside Encyclopedia of Electronic Circuits Volume 3 by Rudolf F. Graf.

Some circuits of interest included:

Page Circuit
245 Electronic Dice
327 Adder
337 Electrostatic Detector
594 On/Off Inverters

Some things we needed to look up while flipping through:

CMRR is Common-Mode Rejection Ratio.

RIAA is Recording Industry Association of America.

RIAA equalization is a specification for the recording and playback of phonograph records, established by the Recording Industry Association of America (RIAA).

PUT is a Programmable Unijunction Transistor.

φ (phi) can represent an angle, typically the second angle mentioned, after θ (theta).

PEP is Peak Envelope Power.

For voltage signals you usually want high input impedance and low output impedance.

LVDT is a Linear Variable Differential Transformer.

NAB is North American Broadcasters. They defined phonograph standards similar to the RIAA’s.

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The One-Way Street | Project 3/30 | Maxitronix 30in1 | Learning Electronics In The Lab With Jay Jay

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Silly Job Title: Chief Fuse Blower. I am the Chief Fuse Blower!

In this video we continue to work through our Maxitronix 30in1, today doing project #3: The One-Way Street. In this project we learn a little more about diodes and LEDs.

We use the EEVblog BM2257 Digital Multimeter to investigate voltages within our circuit.

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

We use the Carpenter Mechanical Pencil to make our notes.

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

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Fluke 17B+ Digital MultimeterThis is an image of the product.

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Module Monday #1: KY-010 Photo Interrupter Module | Learning Electronics In The Lab With Jay Jay

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

In this video we take a look at the KY-010 Photo Interrupter. This module sets up a light beam and can detect when the beam is broken. We interface this module with an Arduino Uno after testing it with a simple circuit on the test board to figure out which pins are which. The pin labeled “S” is the signal, the pin labeled “-” is the negative or ground, and the middle pin is 5V VCC. The signal is high when the beam is interrupted and low otherwise.

There is more info about this sensor here: KY-010 Photo Interrupter Module at ArduinoModulesInfo.

Source code is here: 2025-10-06-KY-010-Photo-Interrupter.ino.

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

We use the EEVblog BM2257 Digital Multimeter to measure voltages.

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

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Yutiars Flat Paint BrushesThis is an image of the product.notes

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Taking information “out-of-band”

Over in Intro to Data Oriented Design for Games, Nic Barker explains “taking information out-of-band”. Nic credits Andrew Kelly of Zig fame for introducing him to the idea (see Andrew Kelley Practical Data Oriented Design (DoD)).

The basic idea is that instead of having one list with items that have an enumeration with three different states, you can have three lists where membership implies the enum state, obviating the need to store the enum value in the item anymore, thus saving space and improving cache locality.