The first battery-powered locomotive manufactured by China Railway Rolling Stock Corporation (CRRC) Dalian Co. Ltd is launched to support...

The first battery-powered locomotive manufactured by China Railway Rolling Stock Corporation (CRRC) Dalian Co. Ltd is launched to support Thailand's railway service http://xhtxs.cn/DDa

https://www.bloomberg.com/news/articles/2020-01-07/fire-at-norway-airport-destroys-hundreds-of-c ars-grounds-planes -- John Larkin ...

https://www.bloomberg.com/news/articles/2020-01-07/fire-at-norway-airport-destroys-hundreds-of-c ars-grounds-planes -- John Larkin Highland Technology, Inc lunatic fringe electronics

https://wattsupwiththat.com/2022/02/18/was-the-felicity-ace-fire-caused-by-electric-vehicle-batt eries/ -- I yam what I yam - Popeye

https://wattsupwiththat.com/2022/02/18/was-the-felicity-ace-fire-caused-by-electric-vehicle-batt eries/ -- I yam what I yam - Popeye

Is there an 18v battery about the size of a C cell? A zener tester, probably 1970s, that goes upto 17v max, takes what looks like a single C cell....

Is there an 18v battery about the size of a C cell? A zener tester, probably 1970s, that goes upto 17v max, takes what looks like a single C cell. There is no circuitry that could up the v as far as I can tell.

I asked this before, but I think on alt.usage.english, and never found a word for it. Say you connect a device to a battery, and in doing so,...

I asked this before, but I think on alt.usage.english, and never found a word for it. Say you connect a device to a battery, and in doing so, the connection goes on then off then on then then off because of a bad connection while you're tightening it. What word would describe that?

I have fucking had it. These corporations are pretty much saying - YOU WILL BUY WHAT WE HAVE. It is bad enough that Tesla had a user...

I have fucking had it. These corporations are pretty much saying - YOU WILL BUY WHAT WE HAVE. It is bad enough that Tesla had a user configurable touch screen dash. You need a fucking speedometer and a battery charge gauge. How many of those SEVENTY thousands did that fuckup waiting to happen cost ? And those backup cameras for people who don't know how the fu ck to drive,

Greetings, gentlemen, I have a vintage MW/LW/SW 12V battery-powered radio I picked up recently at a yard sale. Being 50 years old, however,...

Greetings, gentlemen, I have a vintage MW/LW/SW 12V battery-powered radio I picked up recently at a yard sale. Being 50 years old, however, it has a few faults and needs realignment and whatnot. Before I can proceed with that, I've discovered that the transistors it uses (mostly obsolete germanium devices) suffer from tin whiskers so I will need to re-jig the board so they can be repl...

Here's my inverter for power outages: http://jons-math.bravehost.com/inverter.html I've got it on a shelf to clamp on to my truck battery. ...

Here's my inverter for power outages: http://jons-math.bravehost.com/inverter.html I've got it on a shelf to clamp on to my truck battery. Then I'm running an extension cord through the wall of my trailer, turn the circuit breaker off and plug into the circuit.

Like Amazon Kindle reader? Unless you have really sensitive eyes, read all the time and need that anti-glare feature. They seem to lack internet...

Like Amazon Kindle reader? Unless you have really sensitive eyes, read all the time and need that anti-glare feature. They seem to lack internet connectivity, such as allowing a google search of something in the text as you're reading, which I take to be a real limitation. Battery longevity feature is nice but who really needs it.

Anyone aware of such a thing? Clearly, one can achieve that just by putting a thermistor in series with an ordinary resistor, but my UPS...

Anyone aware of such a thing? Clearly, one can achieve that just by putting a thermistor in series with an ordinary resistor, but my UPS seems to contain a single component that behaves that way - perhaps less than 1% at 20 Celcius - it's in the circuit that controls the battery charging float voltage. Did they perhaps exist 20 years ago (when my UPS was made), for some reason? Sylv...

Who makes a good stable carbon pile? Stable as in it maintains its resistance as current is varied. 200 amp range, 100 VDC. Currently using a...

Who makes a good stable carbon pile? Stable as in it maintains its resistance as current is varied. 200 amp range, 100 VDC. Currently using a battery load tester but I want something I can mount on my own equipment. e.g. I have DC motor that I want to voltage up to see how it draws.

Gentlemen, in pursuance of what is turning out to be a jinxed project (installing a dashcam) I'm attempting to drop 14.5V (the normal battery...

Gentlemen, in pursuance of what is turning out to be a jinxed project (installing a dashcam) I'm attempting to drop 14.5V (the normal battery voltage whilst the engine is running) to 5V for the camera. The camera draws at most 300mA so the regulator (an L7805CV) shouldn't find that task too much of a struggle, since it only has to disspate just under 3 Watts by my reckoning. I'd have ...

I drive my pick-em-up truck every few months. So the battery is dead when I go to use it... like today :-( I'm looking for recommendations...

I drive my pick-em-up truck every few months. So the battery is dead when I go to use it... like today :-( I'm looking for recommendations for the _best_ (*) float charger I can buy to just plug the truck into when it's parked. (*) Cost no object. ...Jim Thompson -- | James E.Thompson | mens | | Analo...

While looking at a single sideband receiver project that may be coming up I checked the usual suspects for quadrature demodulators. Many...

While looking at a single sideband receiver project that may be coming up I checked the usual suspects for quadrature demodulators. Many won't (technically ...) go much below 100MHz. Some do and I need to be more in the 5-10MHz region. But they are massive guzzlers when it comes to draining the battery. Like this one which slurps a whole watt (!): http://cds.linear.com/docs/Datasheet/5584f....

Cart with 2x 12v 33Ah progolf AGM lead acids. 1.5 years after fitting new batteries the available range is down to below 10%. I'm not clear what's...

Cart with 2x 12v 33Ah progolf AGM lead acids. 1.5 years after fitting new batteries the available range is down to below 10%. I'm not clear what's gone wrong. The charger in use has been a cheap chinese one with 2x13.7v=27.4v output. Single stage charging only. It has always been promptly charged after use, and never run below 50% charge. I checked the battery voltages after charge, they wer...

https://arstechnica.com/information-technology/2022/11/researchers-break-security-guarantees-of- tte-networking-used-in-spacecraft/ And will...

https://arstechnica.com/information-technology/2022/11/researchers-break-security-guarantees-of- tte-networking-used-in-spacecraft/ And will SLS even fly or just explode or crash? It Has To Fail! It almost has to fail, 16 years of development... Bad solder joints, burned out LM317, dead backup battery after 16 years... rotten electrolytics.. rust!

Does anyone have any experience swapping out old lead-acid batteries for Li-ion equivalents in a UPS? I see these batteries advertised as...

Does anyone have any experience swapping out old lead-acid batteries for Li-ion equivalents in a UPS? I see these batteries advertised as replacements, but I'm concerned about their safety in this application. New Li-ion UPS systems seem to be extremely expensive.

In my many years of dealing with electronics I've never seen this phenomena. I am curious as to a) the cause and b) the chemistry behind this. I...

In my many years of dealing with electronics I've never seen this phenomena. I am curious as to a) the cause and b) the chemistry behind this. I have a remote control that has four AAA alkaline batteries in series that power the remote control. For a period of time, before the remote became inoperable, the LED activity indicator would not illuminate when I pressed a key but the corr

This is an idea for an experiment I may or may not do. The background: There have been reported seasonal variations in radioactive decay in the...

This is an idea for an experiment I may or may not do. The background: There have been reported seasonal variations in radioactive decay in the past. Now If I took a simple tritium light, and a good quality photo-diode, put both in a light proof box, and logged that with a 10 bit PIC ADC with a decent Vref for say a year to FLASH, say 1 sample / hour, run the whole thing of some battery. ...

I need an MP3 player that runs 24/7. All the ones I have shut down and switch to file transfer mode when you plug in USB. So, I think I need a...

I need an MP3 player that runs 24/7. All the ones I have shut down and switch to file transfer mode when you plug in USB. So, I think I need a 1.5V AAA battery eliminator. All my wall warts use a TL431 as regulator. If I could find a replacement with 1.2V-ish reference in TO-92 I could just drop it in and change one resistor to get 1.5V. What's a good cheap, shunt-regulator IC that wi...