Archive for June, 2020:

2020-06-16 Renewable Portfolio States: California

From https://www.ncsl.org/research/energy/renewable-portfolio-standards.aspx California Title: Renewables Portfolio Standard. Established: 2002. Requirement: 44% by 2024; 52% by 2027; 60% by 2030. Also requires 100% clean energy by 2045. Applicable Sectors: Investor-owned utility, municipal utilities. Cost Cap: Determined by the California Public Utilities Commission. Details: A 2013 amendment allows the California Public Utilities Commission to adopt additional requirements.

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2020-06-15 Windows Apps On Chrome OS

We already can run Windows Apps on Wine on Linux. Maybe one day we’ll be able to get rid of Windows. https://www.theverge.com/platform/amp/2020/6/16/21293180/google-chrome-os-microsoft-office-windows-desktop-apps-support-parallels

2020-06-13 MLCC Replacements For Electrolytic Capacitors

Reply from FB comment Mark French I got a roll (on tape) of 22 uF, 10V and 47 uF, 10V tiny surface mount MLCCs. They’re not polarized, but I’ve heard they tend to be microphonic. I’m going to try leaving the old caps in and bridge a MLCC across them. They’re small enough to to

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2020-06-12 Superspreaders And CoVID19

From Ars Technica article https://arstechnica.com/science/2020/06/just-10-20-of-covid-19-cases-behind-80-of-transmission-studies-suggest/ Quote “Cowling noted that Japan—which has been relatively successful at managing the pandemic—has employed an anti-superspreading policy called the three Cs: Avoid (1) Closed spaces with poor ventilation, (2) Crowded places, and (3) Close-contact settings, such as close-range conversations. The risk for superspreading is highest in situations with all three

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2020-06-11 Optocouplers Don’t Always Protect

From FB comment Monty Ross It’s true that optocouplers are used for isolation. But I have seen whole sections of PC boards with a hole burned where the optocouplers used to be. It is incredible how much damage the power lines do to the PC boards due to high voltage spikes in the power. Transformers

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2020-06-10 Dubbing Adapter

This is an adapter to connect a source such as a smartphone stereo headphone output to the input of an MP3 recorder. The view and diagram is looking at the back of the adapter where the plugs are inserted into the jacks. The switch handles are on the far side. The switch on the right

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2020-06-09 William Shatner Interview

Interview (by Zoom) of William Shatner https://inews.co.uk/culture/television/william-shatner-interview-star-trek-captain-kirk-441311/amp The UnXplained is on Sky History Tuesday 2020 June 9 at 9 PM. Quote from article <<Shatner thinks that part of the appeal of Star Trek is that it shows humans as alive and kicking in 300 years’ time. He is not entirely convinced, though and becomes most

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2020-06-08 Military Intelligence Is A Joke

From FB comment Jun 8 Gayle McGowen Nobbs 🙄🙄 “Military intelligence is an oxymoron.” I was stationed in the Army nike site in Minneapolis. We had to keep the buttons with the secret words for the Radar’s switches in a locked safe. The very same buttons with Lin-Log, Integrator, Dicke Fix, etc. were on the

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2020-06-06 Clark Refractor Telescope At Santa Ana College

From FB comments June 6 David Wise I went up there on the roof of Russell Hall at SAC to do some work and I went into the observatory to see the Clark refractor telescope. Old timer wasn’t used because of the air conditioners running a few yards away, and the observatory door hinges were

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2020-06-05 UV-C Germicidal Lamps Real Or Fake Banana Test

Clive tests three UV-C germicidal lamps to see if they are really putting out UV-C sterilizing light in this 3 minute video. He uses the green banana test. It’s obvious how the cheap LED lights don’t put out any germicidal UV-C. The UV-C wavelengths are blocked by regular window glass or the clear epoxy used

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