Today while reading My temporary PHP fix from 2014 has nearly 20M installs. Today I’m deprecating it. I learned about PHP 8.5’s New URI Extension: A Game-Changer for URL Parsing.
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Category Archives: Learning
9 Firmware Shortcuts You Should Never Ship in a Product
More wisdom from John Teel.
Less-Common Features of Multimeters
Some interesting features.
His old Fluke 187 meter has a “nS” mode (nano-siemens) which can give crazy high resistance measurements (up to 100 GΩ) as conductance measurements.
His Fluke 87V has a low pass filter on its AC voltage input.
He explains Lo-Z mode and phantom voltage. It works by putting a thermistor across the input leads.
His old Tekpower TP8250 analog meter has a D.Ω range for measuring low resistances and a NULL mode for indicating voltage direction. His Sanwa EM7000 also has a NULL mode facility.
His Tekpower TP8250 also has a battery mode, which will measure the voltage from a battery with a load attached.
His ANENG AN870 has a Non-Contact Voltage sensing (NCV) mode which does what it says on the tin. My NCV device is a Fluke 1AC-C2-II VoltAlert Voltage Detector.
How Inverters Turn Battery Power into AC
Learning the Art of Electronics: 2N.2.1 Differentiators, Again | In The Lab With Jay Jay
You can support this channel: patreon.com/JohnElliotV
This post is part of my video blog and you can find more information about this video.
Silly Job Title: Electricity Guardian. I am the Electricity Guardian!
In this video we continue working through Learning the Art of Electronics. Today we revisit the differentiator we built last week. We build a new differentiator using a 10 nF capacitor and a 100 Ω resistor. Before we build our circuit we simulate it using EveryCircuit: LAoE Fig-2N-7 Differentiator with 50 kHz Sine Input.
We use the Rigol MSO5074 Mixed Signal Oscilloscope to investigate our signal and generate our 50 kHz sine wave.
We use the METCAL PS-900 Soldering Station for soldering.
We use the MUIN Solder Fume Extractor to clear the air.
We use the Peak Electronic Design Atlas LCR45 LCR Meter to measure our capacitors.
We use the Bysameyee Head-Mounted Magnifier for magnification.
We use the Multicomp Pro MP701033 Resistor Decade Box as our variable resistor.
We use the Hakko CHP 3C-SA Precision Tweezers for tweezering.
We use the Plato Model 170 Wire Cutter to trim our component leads.
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!
UNI-T UTi260B Thermal Imager notes |
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Adafruit SHARP Memory Display
Today I learned about the Adafruit SHARP Memory Display. Looks like an interesting bit of kit. Don’t have one yet, but maybe one day.
Learning the Art of Electronics: 2N.2.1 Differentiators | In The Lab With Jay Jay
You can support this channel: patreon.com/JohnElliotV
This post is part of my video blog and you can find more information about this video.
Silly Job Title: Surge Sage. I am the Surge Sage!
In this video we continue working through Learning the Art of Electronics. Today we build a differentiator with a resistor and capacitor and test it with a square wave and a sine wave.
We use the Rigol MSO5074 Mixed Signal Oscilloscope to investigate our signals and to generate our input waveforms.
We use the Multicomp Pro MP701033 Resistor Decade Box as our variable resistor.
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!
Sharp EL-546L Scientific Calculator notes |
Let’s go shopping!
A faster way to convert a timestamp ➜ Hour, Min, Sec
Today on Lobsters: A faster way to convert a timestamp ➜ Hour, Min, Sec.
Open Source Firmware Extraction – Reversing the XGecu T76 Universal Programmer
The Radio Station | Project 19/30 | Maxitronix 30in1 | Learning Electronics In The Lab With Jay Jay
You can support this channel: patreon.com/JohnElliotV
This post is part of my video blog and you can find more information about this video.
Silly Job Title: Switch Switcher. I am the Switch Switcher!
In this video we do the 19th project from the Maxitronix 30in1 Electronics Project Lab Kit: The Radio Station.
We use the LiteVNA 64 Vector Network Analyzer to measure reactance and resistance of our antenna coil.
We use the Rigol MSO5074 Mixed Signal Oscilloscope to investigate our signal.
We use the METCAL PS-900 Soldering Station to make our cable fixture.
We use the AiXun H314 Hot Air Gun to shrink our heat shrink.
We use the MUIN Solder Fume Extractor to clear the air.
We use the Riden RD6006 Bench Power Supply to provide power.
We use the EEVblog BM2257 Digital Multimeter to measure resistance and check continuity.
We use the Peak Electronic Design Atlas LCR45 LCR Meter to measure capacitance.
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! :)
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 Heavy Duty Stainless Steel Wire Brush notes |
Let’s go shopping!