Archive for the ‘Security and Safety’ Category:

2019-02-04 Fukushima Daiichi Nuclear Power Plants

In the years since 2011 Mar 11, I have blogged a few times about Fukushima Daiichi, but it’s been quite awhile. This ABC Nightline video on YouTube seems to be realistic and relatively unbiased. At the end of this video they mentioned $15 Billion and forty years to do the cleanup. It looks like they

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2019-01-17 Power Outlets Made From Electric Outlets

From FB comment to Bill Sherman’s post Bill Sherman The cable jacket may be too big diameter to fit into the clamp. But you might consider the special 20 amp plug, the one they put on the power strips that are used in the server racks. I forget what they’re called, but we specified those

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2018-11-15 ESD and Weather

from FB group Building Transistor Radios 2018-11-19 Bob Johansen I worked at a company that had ESD mats on the workbenches, about 1980. We had wrist straps with a 1 Meg resistor in series with the cord to prevent shock hazard. I found that the leads of the resistors were broken but the heat shrink

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2018-11-11 Save The Earth, Stop Driving So Much!

from FB group Orange Talk 2018-11-11 Shelby Kobra I absolutely agree. You’re free to spend more than that on car repairs not to mention the time you have to spend without the car or dealing with the repair hassles. Oh, we should mention that the roads may be more prone to accidents due to the

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2018-10-16 Major Power Outages In Neighborhood

from FB group Orange Talk Oct 16 Melissa McQuary Moser I grew up in a neighborhood that used ‘antiquated equipment’ and we didn’t have these long term outages. I’ve lived in Orange for decades close to Edison’s main station on Tustin and Taft, and our neighborhood had major outages lasting for hours. We remember the

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20185-10-13 Limiting Global Warming To 1.5 Deg. C

I was reading this article about the catastrophe that awaits us in the near future, in the next 20 to 35 years. It states that limiting the global warming will be hard, really hard. But it’s something that has to be done if life as we know it is to be saved. As the article

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2017-09-01 Automated Gallows – Arduino 

Suggestion for project on FB group Arduino Projects – Sept 17 Automated Gallows! A motorized winch adjusts noose. Asks for three officials to each press confirmation button. Has an emergency abort button. Counts down 5, 4, 3, 2, 1… Pulls the trapdoor latch! Monitors heartrate until no sign for 5 minutes Lights up sign “Execution

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2017-06-04 Making A NC Switch Look NO

I’ve been thinking about this for awhile.  Let’s say I have a switch, for example a thermal switch that only has contacts that are NC (normally closed) until a certain temperature is reached.  At that point, it changes to open, interrupting the circuit.  But the input to my controller senses NO (normally open) switch contacts

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2016-12-10 Snowden – Courage And Fear

Someone I know posted this to Facebook: “Courage is not living without fear. Courage is being scared to death and doing the right thing anyway.” What does this have to do with Snowden?  Well, think about it.  Did he weigh the consequences of his actions?  Did he think about what would happen if he went

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2016-07-26 Surge Protectors

I have read about, discussed and experienced how surge protectors work and don’t work, and have written about it before, but Ill try again to explain. Ripoff The most egregious thing surge protectors do is take your money. One of the highest, if not the highest profit margin devices in your home is a surge

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