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Tag Archives: electronics
Passive sign convention
Today I learned about the passive sign convention in electric circuits. It is also known as “associated references”. When current is flowing into the positive terminal of a circuit element then the element is absorbing power. When current is flowing into the negative terminal of a circuit element then the element is providing power. P = VI and when P is positive the element is receiving power and when P is negative the element is providing power. In a complete circuit the sum of power is zero, the sources and loads are evenly balanced.
Mail Call #35: Audio Sockets and Jacks, Electret Microphones, Project Kits, and More | 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: Cable Commander.
In this video we see what has arrived lately from AliExpress and Amazon:
- Bostik Blu Stik 35 g (Tray of 10)
- 1/5Pcs 2.5mm 3.5mm Mono Stereo Audio Cable Male Female Plug Jack Connector 2/3/4Pin Extension Wire DIY Earphone Mic Repair Cable (3.5mm Female 2P, 5Pcs)
- 1/5Pcs 2.5mm 3.5mm Mono Stereo Audio Cable Male Female Plug Jack Connector 2/3/4Pin Extension Wire DIY Earphone Mic Repair Cable (3.5mm Female 3P, 5Pcs)
- 1/5Pcs 2.5mm 3.5mm Mono Stereo Audio Cable Male Female Plug Jack Connector 2/3/4Pin Extension Wire DIY Earphone Mic Repair Cable (3.5mm Female 4P, 5Pcs)
- 1/5Pcs 2.5mm 3.5mm Mono Stereo Audio Cable Male Female Plug Jack Connector 2/3/4Pin Extension Wire DIY Earphone Mic Repair Cable (3.5mm Male 2P, 5Pcs)
- 1/5Pcs 2.5mm 3.5mm Mono Stereo Audio Cable Male Female Plug Jack Connector 2/3/4Pin Extension Wire DIY Earphone Mic Repair Cable (3.5mm Male 3P, 5Pcs)
- 1/5Pcs 2.5mm 3.5mm Mono Stereo Audio Cable Male Female Plug Jack Connector 2/3/4Pin Extension Wire DIY Earphone Mic Repair Cable (3.5mm Male 4P, 5Pcs)
- 10Pcs 4015 Microphone High Sensitivity Electre 3DB Anti-Interference 1.25MM Plug 4*1.5MM Condenser (10pcs)
- 10PCS Condenser pick-up Microphone 9x7mm 9767 9×4.5mm 9745 6x5mm 6050 6×2.2mm 6022 4.5×2.2mm 4522 4×1.5mm 4015 MP3 Accessories (4×1.5MM)
- CD4017 Colorful Voice Control Rotating LED Light Kit Electronic Manufacturing DIY Kit Spare Parts Student Laboratory
- IEC 320 IEC320 IEC Figure 8 C8 Male to 3X Female C7 plug Splitter Power Adapter connector for Power Supply 1 in 3 out
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 Mini Magnetic Precision Screwdriver Set notes |
Let’s go shopping!
Mail Call #34: Project Boxes, Power Adapters and Power Switches from AliExpress | 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: Electricity Guardian.
In this video we take a look at what has arrived in the mail from AliExpress.
I mention about a project I’m working on: Electronics Project #13: Sanyo AM/FM Digital Clock Radio RM6018 Teardown Part 1.
Here is a list of the stuff that arrived:
- 90x65x36mm
- 108x56x40mm
- 82x52x35mm
- NEWEST 1pcs Figure 8 IEC 320 IEC320 iec C7 to C8 90 Degree Left & Right Angled AC Power Adapter Male Female Extension connector
- 5Pcs Honyone MR-6B 15x21mm 4Pin ON-OFF DPST Mini Rocker Switch 12A/125VAC 10A/250VAC
- 5/20Pcs KCD4 Switch DPST 4/6Pin ON OFF Rocker Switch Toggle Switch with Led Light 16A 250V AC 25x31mm (Red 4PIN, 5PCS)
- 5/20Pcs KCD4 Switch DPST 4/6Pin ON OFF Rocker Switch Toggle Switch with Led Light 16A 250V AC 25x31mm (Red 6PIN, 5PCS)
- Red Mushroom Cap 1NO 1NC DPST Emergency Stop Push Button Switch AC 660V 10A Switch Equipment Lift Elevator Latching Self Lock (5pcs)
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 Mini High-Precision Electronic Scale notes |
Let’s go shopping!
Mail Call #33: Wrench Set, Allen Key Set, Sandpaper, USB Power, Scraper, and More | 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: Chief Fuse Blower.
In this video we take a look at what has arrived in the mail from AliExpress:
- New Upgrade Wrench Socket Set Hardware Car Boat Motorcycle Bicycle Repairing Tool
- DELIXI ELECTRIC Allen Key Set，Allen Hex Wrench Screwdriver Set With Sleev Universal Torque Long Metric,for Motorcycles, Bicycles (JP-1086 hei)
- Sandpaper Roll Emery Cloth Sanding Abrasive Sheets 80 120 180 240 600 800Grit Sand Paper Sanding Abrasive Sheets (80 Grit, 150 Grit, 240 Grit)
- Australian USB Fast Charger AU Plug Quick Charger Mobile Phone Charger 3.1A Multiple 4 Ports USB Travel Adapter Wall Charger (AU Plug Black)
- 1/5PCS Lamp Sockets Converter B22 To E27 LED Bulb Converter Lamp Base Holder Screw Light Socket Adapter Anti-burning Bulb Holder (5PCS, B22 To E27)
- Stainless Steel Scraper Set Ultra Sharp Scrapers Remove Residue from Steel Aluminum and More Ends Offer Extra Leverage (A)
- 1/2/5/10PCS Self-Adhesive Desktop Socket Fixer Hanging Power Strip Cable Organizer Wall Holder Fixator Removable Wall-Mounted (10PCS)
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 Multifunction Hook Tools |
Let’s go shopping!
Mail Call #32: Metho, Turps, Scrapers, Screwdrivers, Hex Wrench, Rachet, and More | 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: Fixeruperer.
In this video we take a look at what has arrived in the mail from AliExpress. Also a few things I picked up from the local hardware store: True Value Hardware.
- Methylated Spirits (Metho)
- Mineral Turpentine (Turps)
- 25mm Metal Scraper
- 38mm Plastic Scraper
- 32 in 1 Screwdriver Set, Cool Gadgets, Stocking Stuffers, Christmas Gifts for Dad, Grandpa, Husband, Boyfriend, Camping Gi (green)
- 9pcs/14pcs Powerful Socket Inner Hexagonal Wrench Hexagonal Handle Screwdriver Socket Extension Rod Pneumatic Screwdriver Insert (14pcs)
- Mini treble 1/4 Ratchet Wrench Double Ended Quick Socket Ratchet Wrench Screwdriver Hex Torque Wrenches Set Spanner (2-in-1 Dual Head)
- Ear Cleaning Tool Stainless Steel Ear Pick Kit &1Pc Storage Bag Earwax Remover Tool (Color: A-Black)
- SATA to USB 3.0 / 2.0 Cable Up to 6 Gbps for 2.5 Inch External HDD SSD Hard Drive SATA 3 22 Pin Adapter USB 3.0 to Sata III Cord (USB 3.0)
- Mini Hammer Smashing Walnut Round Head Wooden Handle Hammer Car Escape Tool Hand Hammer Multi Function Mini Hammer
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 J15026-2 6-Knob Resistor Box |
Let’s go shopping!
Mail Call #31: Sound Level Meter, Half Moon Lamp, and Wire Mesh Baskets | 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: Spark Specialist.
In this video we take a look at what has arrived from AliExpress and Amazon:
- ANENG GN102 Decibel Meter Tester Digital Sensor Noise Meter 30-130dB Ambient Noise Windproof Sponge Sound Measuring Instrument (GN102)
- 2025 20W LED Half Moon Lash Light Temperature 3000K-6000K Floor LED Ring Lamp For Beauty Facials Skincare Tattoo Eyebrows Filmin (black, AU)
- Set of 3 Household Wire Mesh Metal Steel Storage Basket Organizer CD Storage Boxes Organizer Bin Container Tote with Handles for Home Office 10.5″ x 5.5″ x 5.5″
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!
Maxitronix 500in1 Electronics Project Lab Kit notes |
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 Brush notes |
Let’s go shopping!
Mail Call #30: Loot from AliExpress and Amazon | Learning 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: Watt Wizard.
In this video we take a look at what arrived in the mail. Mostly loot from AliExpress but also some USB hubs from Amazon.
In the video I mention Goo Gone. The stuff I use is the Original Goo Gone. It’s really great stuff! I mostly use it for removing sticker goo after I’ve peeled a sticker off something.
In this video I learn about “rivet nuts”. The ones I got are these ones. There’s a video on YouTube that will give you the idea about how these things work and are used.
I also mention about the 4017 integrated circuit which is a decade counter used in this project kit.
As promised I scanned the instructions on the cover of my “multitester” which is the analog voltmeter and ammeter I got:
This is the equipment which arrived:
- SABRENT 4-Port USB 3.0 Hub with Individual LED Power Switches – Slim, Portable Design – 2 Ft Cable – Fast Data Transfer – Compatible with Mac & PC (HB-UM43)
- RELIFE 2in1 Phone Repair Dust Cleaner Air Blower Ball Cleaning Pen for Phone PCB PC Keyboard Dust Removing Camera Lens Cleaning (Green)
- 1 double headed installation hammer, 25mm to 45mm rubber hammer with rubber handle, detachable insulated installation hammer (25mm)
- ABS Welding Wire Fixture Soldering Wire Holder Cable Clamp Holder for 30AWG-12AWG Wire Welding Bench with 5 Gears
- Mini Analog Multimeter Tool AC/DC 1000V Voltmeter 250mA Ammeter 1K Resistance Meter Handheld Pointer Voltage Multimeter (black)
- 7.0MM TYPE-C Endoscope Camera IP67 Waterproof 6 LEDs Adjustable USB Android Flexible Inspection Borescope Cameras for Phone PC (7mm Soft Cable, 1m)
- 150/250/500mL Water Beak Pouring Kettle Tool Succulents Plant Flower Watering Can Squeeze Bottles with Gardening Tools Garden (150ml)
- 1pc Diamond Sharpening Stone for Home and Outdoor Knives Sharpens Blades Quickly and Easily For Apex Ruixin Pro Knife Sharpener (240Grit, 160x20x9mm)
- 6/12 Pcs Magnetic Screwdriver Bits Non-slip Shockproof Phillips Impact Bits Hex Shank Alloy Steel Bits Suitable for Power Tools (12 Pcs Set)
- Auto Center Puncher Hole Marker Wood Metal Steel Spring Load Kerner Drill Locator Heavy Duty Punch Carpentry Automatic Hand Tool (Center Punch 2pc)
- 8pcs CPU IC Glue Remover Phone Repair Tool C Chip Repair Thin Blades Piratical Repair Hand Tool For Mobile Phone Computer (8pcs)
- 10/20x Magnetic Pins Neodymium Magnets Pin Board Magnet For Board Cone Magnets Super Strong Fridge Magnets For Home Storage Tool (20pcs)
- Premium Needle File Set – High-Carbon Steel Files with Non-Slip Ergonomic Handles for Precise Filing on Wood, Plastic, Model, Je (10PC, 150mm, Other)
- COB LED Work Light Dimmable USB Rechargeable LED Flashlight Inspection Lamp With Magnetic Hook Power Bank 18650 Battery Torch (big 1pc)
- 1/4” 5PCS Drill Bit Set Cutting Tools for Woodworking Knife Wood Carving Tool Carpentry Wood Cutting Tools WorkDrill Bit Set
- NEWACALOX Magnetic Mini Soldering Flexible Arm PCB Circuit Board Hoder Soldering Tool for Jewelry Making/Electronic Repair (N-JZ-D10-4)
- 4-Claw IC Chip Extractor Remover Tool Precision Parts Grabber Extractor Pick Up Puller for Electronic Component Nuts Repair Tool (Silver)
- 21pcs Hand Rivet Nut Head Set Rivet nut tool Manual Riveter Rivnut Tool Accessory for Nuts M3 M4 M5 M6 M8 M10 M12 Simple install (M3 with 20pcs)
- 10Pcs Diamond Needle File Set 3x140mm Mini Needle File Kit For Stone Glass Metal Carving Craft Hand Tools Needle File Set (10pcs, 140mm)
- DIY Diamond Painting Embroidery Storage Box, Nail Art Jewelry Rhinestone Mosaic Storage Container, Multifunctional Storage Box (30 Grids)
- 1060/530/127PCS Heat Shrink Tubing kit 2:1 Shrinkable Wire Shrinking Wrap Wire Connect Cover Cable Repair Protection (1060PC, 220V AU Plug)
- LED Floor Lamp For Living Room Adjustable Gooseneck Stand Light Remote Dimmable Indoor Bedroom Standing Reading Work Light (Lighting Floor Lamp, AU Plug)
- 1.5m/3m Soft Tape Measure Tailor’s Tape With Snap Fasteners Body Measuring Double-sided Ruler For Needlework Sewing Tool (1.5m)
- 0.3m/1m/2m 5V USB Power Supply Cable 2/4 Pin USB 2.0 Type A Male Plug/Female Jack Wire Charger Charging Cord Extension Connector (USB 4P Female-WH, 0.3M 1Pcs)
- 0.3m/1m/2m 5V USB Power Supply Cable 2/4 Pin USB 2.0 Type A Male Plug/Female Jack Wire Charger Charging Cord Extension Connector (USB 4P Male, 0.3M 1Pcs)
- 0.3m/1m/2m 5V USB Power Supply Cable 2/4 Pin USB 2.0 Type A Male Plug/Female Jack Wire Charger Charging Cord Extension Connector (USB 4P Male-WH, 0.3M 1Pcs)
- 0.3m/1m/2m 5V USB Power Supply Cable 2/4 Pin USB 2.0 Type A Male Plug/Female Jack Wire Charger Charging Cord Extension Connector (USB 4P Female, 0.3M 1Pcs)
- 12V DC Connector 5.5×2.1mm Male Female Plug 12V DC Power Pigtail Cable Jack for CCTV Camera Connector Tail Extension 24V DC Wire (5 Female)
- 1/5/10 Pcs 5.5×2.1mm DC Male Female Power Plug Cable Wire Jack Adapter Connector for CCTV Single Color 3528 5050 LED Tape Light (10 Female black)
- Professional 8.5-inch Stainless Steel Kitchen Scissors with Aluminum Alloy Handle – Perfect for Cutting Chicken Bones Meat Fish (Silver scissors)
- 10/11pcs Miniature Paint Brushes, Detail Tip Paint Brushes Set With Ergonomic Handle – Suitable For Acrylic Painting, Oil, Wat (green)
- Chzimade 5Pcs 30ml Refillable Plastic Ceramic Pottery Tools Squeezable Needle Bottle Point Line DIY Polymer Clay Tools Gifts (2003822-WHITE)
- 8.5 Inch LCD Writing Tablet Digital Drawing Tablet Handwriting Pads Portable Electronic Tablet Board ultra-thin Board (8.5inch green)
- 1 Set Glue removal blade With 10 Blades, Telescopic Adjustment Knife, Cleaning Scraper Tool For Removing Labels,Stickers,Paint (1 Set)
- Mini treble 1/4 Ratchet Wrench Double Ended Quick Socket Ratchet Wrench Screwdriver Hex Torque Wrenches Set Spanner (2-in-1 Dual Head)
- Metal pry bar pry plate anti slip handle, high hardness metal multifunctional removable nail door radio disassembly and assembly (Silver)
- T-type 3mm to 6mm hand tap wrench thread tapping tool set hand wrench thread tapping M6 to M8 tool set (Tap wrench set)
- XCAN 0.1mm-2.0mm Import Carbide PCB Drill Bits Print Circuit Board Mini CNC Drilling Bit Set (10pcs 0.1-1.0mm Set)
- 6 PCs Non-Slip Magnetic Cross Head Household Electric Driver Screw Set – High Hardness Hand Drill Bits for Electric Screwdrivers (6pcs)
- 11/18/26Pcs Car Terminal Removal Repair Tools Electrical Wiring Crimp Connector Pin Extractor Kit Keys Automotive Plug Pullers (26Pcs)
- CD4017 Colorful Voice Control Rotating LED Light Kit Electronic Manufacturing DIY Kit Spare Parts Student Laboratory (DIY Kits)
- 5V Electronic Hourglass DIY Kit Funny Electric Production Kits Precise With LED Lamps Double Layer PCB Board 84*40mm (Electronic Hourglass)
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 9 in 1 Air Quality Meter |
Let’s go shopping!
Mail Call #29: Raspberry Pi Picos, 2.5V Lamps, and a Broken Bin | 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: Code Warrior.
Super big thanks to my new Patreon supporters Ali and Learning as a hobby, it’s really great to have your support, thank you!
In this video we have a look at what has arrived in the mail:
- Cute Mini Desktop Small Waste Bin Garbage Trash Can Office Home Basket Table AU: I ordered three but only one survived postage, the other two, including this one, arrived damaged :(
- Official Raspberry Pi Pico Board RP2040 Dual-Core 264KB ARM Low-Power Microcomputers High-Performance Cortex-M0+ Processor (RP2040 TYPE-C 16MB)
- 10pcs E10 1.5V 2.5V 3.8V 4.8V 6V 6.2V little Bulb for Test Experiment Teaching Flashlight (2.5V 0.3A)
- 10 Pcs Experiment Equipment Screw Bulb Socket E10 Lamp Holder Base Small Bulbs Lamps Replacement Light Plastic
I mention about the ITL Wiki and my Learning the Art of Electronics project, the first lab should come out for that this coming Tuesday, fingers crossed!
Also I mention about the project from Willow Cunningham which is PentaPico: A Pi Pico Cluster For Image Convolution and is what I got my RPi Picos for!
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 6pin Pre-crimped Connector |
Let’s go shopping!