12V Circuit breakers for auto battery chargers

Started by Anonymous in sci.electronics.design10 years ago 13 replies

I have a battery charger that is rated at 2, 15, or 100 amps. It's a Everstart WM-1510 ma model. (Walmart). I found that Schumacher has...

I have a battery charger that is rated at 2, 15, or 100 amps. It's a Everstart WM-1510 ma model. (Walmart). I found that Schumacher has an identical charger model SE-1510 ma. That says these Everstart chargers are made by Schumacher. Anyhow, the 12v circuit breaker has died and will not reset. That seems to be the most common problem on all chargers. My question is this. The Schu...


Ultralow Noise Tester: 9V Battery vs 7805 vs LTZ1000

Started by Mike Monett in sci.electronics.design8 months ago 1 reply

Marco Reps has an interesting article on low noise amplifiers: Ultralow Noise Tester: 9V Battery vs. 7805 vs....

Marco Reps has an interesting article on low noise amplifiers: Ultralow Noise Tester: 9V Battery vs. 7805 vs. LTZ1000 https://www.youtube.com/watch?v=XpbDMo8an5w - uses ADA4523: $3.030 Mouser, Digikey, 4.2 nV/sqrt(Hz), RRIO, 100pA Ib - Datasheet https://octopart.com/search?q=ada4523 Cross-correlation would improve noise floor. Hard to get down to Gerhard's level, but maybe doable. ...


What is the mystery behind "white light led light from 1.5 Volt AA battery"

Started by Anonymous in sci.electronics.design8 years ago 12 replies

Could some electronics guru please shed some light on this ? Several Web sites(please check list below) have schematics and flashy color...

Could some electronics guru please shed some light on this ? Several Web sites(please check list below) have schematics and flashy color photographs of single white led light powered off a single 1.5 Volt AA battery. http://cappels.org/dproj/ledpage/leddrv.htm http://www.electroschematics.com/6195/high-efficiency-led-with-1-5-volts/ dinspirations.com/appliedcontent/Projects/Proj-WhiteLED...


LIGHT UP GOLF BALLS GLOW LED

Started by Fred Bloggs in sci.electronics.design1 month ago

LONG BATTERY LIFE - High-powered battery combined with low-energy LED lights provides up to 60 hours of non-stop light up playtime. The Cipton...

LONG BATTERY LIFE - High-powered battery combined with low-energy LED lights provides up to 60 hours of non-stop light up playtime. The Cipton Impact-Activated LED Golf Ball remains lit for 5 to 8 minutes after first impact, with a strong LED light visible from 100+ yards out. Light up your Golf game with spectacular color-changing LED lights any time of day with the Cipton Illumini


Battery balancing:

Started by Ed Lee in sci.electronics.design1 year ago 30 replies

I am wiring up 4 banks of batteries with dip40 pin & zif. Considering 4 battery banks: Min 360V, Max 400V _A_ _B_ _C_ _D_ 370 380 390...

I am wiring up 4 banks of batteries with dip40 pin & zif. Considering 4 battery banks: Min 360V, Max 400V _A_ _B_ _C_ _D_ 370 380 390 400 400 390 380 370 connected with X ohm at Y duty 1. what Z AWG do i need? X Y Z 1 10 5 25 10 50 ohm % AWG 2. What is the equiv. W AWG for pin headers and 3M zif sockets Z should be < W Y can be lower


Ford to build electric vehicle battery plants in Kentucky, creating 5,000 new jobs

Started by Fred Bloggs in sci.electronics.design1 year ago 66 replies

This and a second assembly plant in Tennessee are a huge investment. Looks like most of the money is coming from SK Innovation, a South Korean...

This and a second assembly plant in Tennessee are a huge investment. Looks like most of the money is coming from SK Innovation, a South Korean giant that supplies EV batteries for a multitude of automotive manufacturers. https://www.reuters.com/technology/sk-innovation-invest-43-bln-us-battery-production-with-ford-m otor-2021-09-27/ https://www.wkyt.com/2021/09/27/ford-build-electric-vehicle-


is there something like fake battery or replacement?

Started by Anonymous in sci.electronics.design3 years ago 4 replies

i just want to remove the battery body and let my phone boot normally. but no luck, when i removed it and plug in usb power, the...

i just want to remove the battery body and let my phone boot normally. but no luck, when i removed it and plug in usb power, the phone boot but seems like low power and shutdown. thank


Bit of electronics for a change, circuits, chips! yummy jummy!

Started by Jan Panteltje in sci.electronics.design2 months ago 107 replies

Bit of electronics for a change, 800V automobile systems cicuits ...

Bit of electronics for a change, 800V automobile systems cicuits https://www.electronicdesign.com/markets/automotive/article/21249715/power-integrations-whats-d riving-evs-to-higher-battery-voltages What's Driving EVs to Higher Battery Voltages? Electric-vehicle makers are turning to 800-V systems to solve range and charging time issues that have created barriers with consumers and slowed


Great AA/AAA Battery Test 2022 by Gough Lui

Started by a a in sci.electronics.design2 weeks ago 9 replies

Great AA/AAA Battery Test 2022 by Gough Lui https://goughlui.com/ Could you ask Gough Lui to use the same number of cells by brand name for...

Great AA/AAA Battery Test 2022 by Gough Lui https://goughlui.com/ Could you ask Gough Lui to use the same number of cells by brand name for tests not promoting 100 Amazon Cells, since Amazon is not brand name for AA or AAA cells and stays for seller. So limiting number of cells for tests to 2 pieces we don't have to test 316 cells 23 x 2 = 46 reducing testing time 6 times Inje


OT: How to fix a bloated battery

Started by John Doe in sci.electronics.design8 months ago 11 replies

Just stick a needle in it to release the pressure. There are more than a few such videos on YouTube.

Just stick a needle in it to release the pressure. There are more than a few such videos on YouTube.


EV Battery Bank bad design

Started by Anonymous in sci.electronics.design6 months ago 10 replies

This is way worse than any electric car situation could ever be...

This is way worse than any electric car situation could ever be...


Batteries From Wood?

Started by Dean Hoffman in sci.electronics.design1 year ago 1 reply


review this battery charger

Started by Cydrome Leader in sci.electronics.design11 months ago 29 replies

What do you folks think about this gem: https://www.youtube.com/watch?v=cpaWCedoptA I like the special high reluctance transformer and...

What do you folks think about this gem: https://www.youtube.com/watch?v=cpaWCedoptA I like the special high reluctance transformer and kindling used as insulation.


lithium battery fun?

Started by Anonymous in sci.electronics.design3 years ago 42 replies

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


scary video of battery fire

Started by Anonymous in sci.electronics.design9 months ago 34 replies

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


18v C cell?

Started by Tabby in sci.electronics.design1 year ago 11 replies

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.


OT: Rant

Started by Anonymous in sci.electronics.design3 years ago 7 replies

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,


Simple audio amp design

Started by Cursitor Doom in sci.electronics.design11 months ago 93 replies

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...


inverter

Started by Jon in sci.electronics.design11 years ago 3 replies

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.


Why would anyone buy an e-reader?

Started by Fred Bloggs in sci.electronics.design1 year ago 18 replies

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.