From FB comment There were 4 main breaker panels in the electrical room inside, 3 rated at 1200 amps and one rated at 3000 amps. My shop was on the other side of the wall, and I could put a CRT type monitor against the wall and the 60 Hz magnetic field caused the monitor
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I managed an apartment complex and we had a nice elderly lady living there. But she had a habit of turning the TV up too loud. I worked with this lady’s (adult) son to solve the problem. His mom was disturbing the neighbors in her apartment bldg. So I went inside the TV and
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From comment left at a blog for a battery voltage monitor project I think this is a great project. But I’d like to relate to you all how it was done in the past, when alternators started replacing generators. Back then the rectifiers were not as rugged as now, and sometimes a rectifier diode would
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Quote from a mailbag: “One reader took issue with our In the Works rating for Trump’s promise not to take a salary. We noted that at the White House press briefing on April 3, press secretary Sean Spicer announced that Trump would be donating his full first-quarter, pre-tax earnings of $78,333 to the National Park Service. The
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Re: the efficiency of electric lighting systems, that’s very low. This was written before LED lights had become widespread, so I wonder what the number would be today. Probably somewhat higher. From https://ieer.org/pubs/atomicmyths.html Also see https://ieer.org/resource/carbon-emissions/electric-future-nuclear-carb-diet/ “The average efficiency of electric lighting systems is about one percent – that is, only about one percent of the energy
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From FB comment to Bill Sherman’s atomic clock’s damaged LCD At our computer club one of our members talked about this. Over 3 years ago NIST added phase modulation to WWVB. Only one of the makers of ‘atomic clocks’ has just come out with a clock that demodulates this phase modulation. LaCrosse has a wall
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I bought a “Unibit” type of tapered drill bit from China, a large one. It cuts up to 36mm but the shank is 1/2 inch or 13 mm. I want to put it in a 1/4 inch or 6.5mm chuck. The only drill I have with a half inch chuck is a big hammer drill.
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I have a bunch of these Ni-MH battery packs with 5 cells per pack for 6 volts. I want to use them to power 5 volt devices, so I remove one cell. The metal straps are spot welded between cells, and the metal strip shown in the photo is between cells. It has two strips
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I ordered these clock kits a few weeks ago and they finally arrived today. I just couldn’t keep my hands off the soldering iron, so I started stuffing the board with components. I was blindly winging it because the instructions that came with it were in Chinese. I didn’t have any problems because all the
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Several weeks ago I purchased a “M-6013 Capacitor Meter ESR Meter” from a Chinese seller on eBay. It cost about $27, and I think shipping was 99 cents. I received it two weeks ago and read all the instructions and tried all the buttons and functions, but I found nothing having the ESR test. I
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