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STICKY Megathread: Random observations about electronic devices

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Basic Electricity - Resistance and Ohm's law

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IMG

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Got these great capacitors for sale cheap - Great value! [650x500 - 60KB]

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341

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Observations Observation: The audio inputs (white and red) of old CRT televisions can be used without needing a video (yellow) signal, while newer TVs usually require a video signal for the audio inputs to be activated at all.

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Unknown ESP32 saving modes: Light Sleep, Clock Reduction, Modem Sleep, Hibernation, and a few tricks [17:23]

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Making 100 transistors silicon integrated circuit chips in your garage

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234

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Working on a vacuum tube device and ran across an unusual issue.

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FreeCAD Export to KiCAD [05:36]

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Self-Soldering Circuits [08:15]

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165

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Tech tips Mobile phone overheating from fast charging? Put it on a portable USB fan.

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"Why do many laptops run on 19 volts?"

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Using EPROMS And EEPROMs As Programmable Logic With Lisp

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A 100-Year-Old Electronic Musical Instrument Brought Back To Life

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Soldering vinyl-insulated wire directly to PCB [00:19]

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311

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Overburning CD-RW experience: Disc speeds up towards the end when played back using old audio CD player!

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Build a Burning Laser from an Old DVD Burner [12:52]

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Great technique to drop headers without a vacuum desoldering station.

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LED Basics

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50-Ohm Impedance: Origins and Why It Became the Standard

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The Transistor: a 1953 documentary, anticipating its coming impact on technology

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AT&T Archives: A Modern Aladdin's Lamp, about vacuum tubes,1940

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PinePower 120W desktop power supply features display, USB PD, QC 3.0 and wireless charging

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Tech tips Shorted USB data lanes signal a mobile phone the availability of indefinite charging speeds if manually supplied with a voltage.

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Inductors and Inductance (brilliant 3D animation) - Eugene Khutoryansky.

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Super Capacitor Rocket

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Difference between Linear Power Supply and SMPS (with Comparison Chart).

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