Latest threads in General Electronicsshow only best voted threads
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Can't find clearcut instructions that work for resetting Mikrotik RB411 routerboard to 192.168.88.1
I know it was working when I put it in the storage box years ago. But I don't remember what IP address it was set to at that time. The 18VDC 1Amp POE is known to be good & the RB411 lights & beeps...
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1 year ago
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Rubber beading on high voltage cable insulation
Hey all, Just curious what you think about this. The photos at the link are showing large gauge wire used on a vintage 600 VDC rail vehicle. We're talking 1930's electric streetcar technology....
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1 year ago
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Brillenbaendchen
---------8x-------------- Brillen_Baendchen.txt all20220614 DIY! man nehme 80-90 cm 1-1,5 mm Seil Nylon/PE/PPE etc... (1)(2)(3) an beide Enden eine verstellbare Schlaufe machen, So ist die Brille...
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1 year ago
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battery jargon
A battery consists of two metals brought into contact. Somehow, they form an anode/cathode electric potential. That's the extent of my battery chemistry. So: NiCd - nickel and cadmium carbon zinc -...
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2 years ago
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Key FOB, Assume has Active RF ID
Hi, I have a 2017 Jeep Grand Cherokee. To open the car door (locked), I simply grab the handle and the door unlocks then opens with the Key FOB in my pocket. The Key FOB has buttons that include...
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2 years ago
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replacing a battery
The battery in my phone burned out, so I ordered a replacement from Amazon. Examining the case, I can't find any fasteners. Do I open it with an oyster knife?
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2 years ago
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particle accelerators
In days of old, particle accelerators used bubble chambers as detectors. What sensor technology is utilized at CERN? And when was the last time bubble chambers were in use?
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2 years ago
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phone antennas
Do cell phones contain a separate antenna each for phone network, Wi-fi and Bluetooth? Also, does Bluetooth include any security? Like, if a user is listening to his music through a Bluetooth link,...
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2 years ago
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battery charger
I picked up a AAA NiMh battery charger. The label reads: Output: 1.2 V 800 mA AA/AAA charging: 120 mA Why the two different current specs? Does not compute -
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2 years ago
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automobile remotes
A question concerning the car remotes; door lock, headlights, etc. Each car/handset must be a matched pair, regarding the ID and security codes. Obviously only one car in the parking lot ought to...
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3 years ago
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ICETech Micromaster LV
I have one of these things sitting around in my workshop but so far I have been unable to make any sense of it, so rather than chuck it in the skip I am offering it free to anybody who might want to...
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3 years ago
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Ancient refrigerators
How did they make ice, in the days before electricity? And did they figure it out empirically, prior to the development of thermodynamic theory? ? Rich
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3 years ago
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Power Routing Switch
Working on a gadget that uses a 12 volt motor (10 amp peak) and misc electr onics running on lower voltages. It is powered from an external PSU like a laptop supply, but 12 volts. There is also a...
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3 years ago
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warm air
A nearby college includes a building, surrounded by an outdoor arcade, at street level. At one point, the warm internal air is expelled, which is natural, they perform continuous circulation. A nice...
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3 years ago
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C.Crane radio antenna problem
Hi, I have a C.Crane Witness + Radio. It has a tivo-like function and can record broadcasts to mp3 files on an SD card. The antenna fits into the headphone jack and is about 2 ft long. The reception...
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3 years ago
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