This is a note for Future John. Today I got two new RM12-9HR REMCO VRLA Batteries for each of two PowerShield Defender 1600VA UPS systems. The RM12-9HR batteries are 8.5 Ah 12 V batteries I paid AU$65 each for four of them.
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Silly Job Title: Maker of Videos. I am the Maker of Videos!
In this video we continue working through Learning the Art of Electronics. There is no prac today, today we cover some material about decibels (subscriber-only content).
In today’s video I mention about my mate Jason Jacques who is a fellow YouTuber. Also thanks to my mate Chris from Learning as a hobby for telling me about Desmos.
Over on Wikipedia you can find out more about Decibels and Alexander Graham Bell.
The book I recommend is: Logarithms and Exponentials Essential Skills Practice Workbook with Answers (Improve Your Math Fluency).
I included a plot of the logarithm from Desmos: Desmos Logarithm Plot.
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Yum Cha 300pcs Heat Shrink Wire Connectors |
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Today installed my replacement UPERFECT 4K Portable Monitor 15.6” UHD IPS 3840×2160 USB C Monitor HDR FreeSync from UPERFECT. This is a small form factor 4K display which I use as the third 4k monitor on my primary workstation. I use it for displaying notes and reference material, mainly this:
Today I learned about Gabriel’s horn, a solid of revolution with infinite surface area and finite volume.
Good news, everyone!
Note: to enable this feature in the client the hosted page needs to allow it with something like this:
<meta name=”responsive-embedded-sizing” content=”allow-origins=https://example.com”>
I watched this great movie Perfect Days recently and learned about the Japanese word “komorebi”, it refers to sunlight filtering through the leaves of trees, creating shifting patterns of light and shadow, unique and beautiful in the moment.
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This post is part of my video blog and you can find more information about this video.
Silly Job Title: Outlet Overlord. I am the Outlet Overlord!
In this video we continue working through Learning the Art of Electronics. Today we build a C:C voltage divider with two capacitors after reviewing our notes for 2N RC Circuits so far.
We use the Rigol MSO5074 Mixed Signal Oscilloscope to generate our test signal and examine our waveforms.
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!
MECHANIC Hard Brush |
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