Not sure if this belongs here or in the megavr and tinyavr forum 
Fuse Guide
Author
Message
Perhaps that is the Australian version. The US version would need to include a penny.
Level: Moderator
Joined: Mon. Jul 18, 2005
Posts: 100381 View posts
Location: (using avr-gcc in) Finchingfield, Essex, England
Interesting to note that laughing cow cheese seems pretty universal :-)
Reminds me of when I was a child and something my twin and I were using blew a fuse. So we tried to fix things with the universal solution that was a piece of aluminium foil. Switched on. Large flash and it left a semi-circular burnt patch in the carpet about 3" in diameter. We tried to cover it up. We thought we had got away with it. Years later in passing my mum happened to say "and we never did know exactly how you managed to create that burn in the carpet". Oops - guilty as charged.
Level: 10k+ Postman
Joined: Tue. Nov 11, 2003
Posts: 10343 View posts
Location: Bartlesville Oklahoma USA
clawson wrote:
Interesting to note that laughing cow cheese seems pretty universal :-)
Reminds me of when I was a child and something my twin and I were using blew a fuse. So we tried to fix things with the universal solution that was a piece of aluminium foil. Switched on. Large flash and it left a semi-circular burnt patch in the carpet about 3" in diameter. We tried to cover it up. We thought we had got away with it. Years later in passing my mum happened to say "and we never did know exactly how you managed to create that burn in the carpet". Oops - guilty as charged.
hehe. Mine was an automotive tail-light bulb I was using for a load. Melted itself clear to the wood before I noticed it.
If you don't know my whole story, keep your mouth shut.
If you know my whole story, you're an accomplice. Keep your mouth shut. 
I was around 10 when I popped my first fuse. I was playing with Holiday lights and I dd something dumb and the big spark, and the smoke let me know that I....well, BLEW IT. I turned white as the t-shirt I was wearing and was so scared my father started laughing at my incoherent babbling.
I still pop a breaker, or a fuse from time to time, makes one appreciate those little overlooked, over-protective buggers.
JIm
Level: Raving Lunatic
Joined: Wed. Mar 12, 2003
Posts: 2951 View posts
Location: Portland, Oregon USA
Mine is the 18650 battery holder that got the red and black wires somehow touching each other. I didn't notice until I saw the melted black plastic of the battery holder dripping onto the floor.
Level: Moderator
Joined: Mon. Jul 18, 2005
Posts: 100381 View posts
Location: (using avr-gcc in) Finchingfield, Essex, England
Simonetta wrote:
Try putting your Lithium battery on the passenger set of your BMW Z3 and then short-circuit the contacts. Melts a nice hole through the middle of the seat. Don't ask me how I know this!
I didn't notice until I saw the melted black plastic of the battery holder dripping onto the floor.
I tested the 13 mm wench fuse on my electric car. The battery cable end vaporized, and plated my eye glasses. I was very lucky, no other damage.
Kit, a brand of wrenches (spanners) out here is 'Sidchrome'. The telecom guys had an informal measure of energy called the 'sidchrome'. Thus your battery had at least one sidchrome of power!
The battery was 3 parallel sets, of 3 12V batteries in series. It was around 1983, so i do not remember exactly where I made the short. I do remember the flash, and very cautious around batteries since. I did float the batteries from the car ground, and added a bleed resistor, after my long hair stood on end when getting out of car. When I saw the movie "Back to Future", I understood about Dr. Emmett Brown and his hair, getting out of the Deloren.
Last Edited: Wed. Sep 21, 2016 - 12:51 AM
Hi Clawson,
How do you melt a nice hole through the middle of a BMW Z3 passenger seat?
Paulvdh wrote:
Hi Clawson,
How do you melt a nice hole through the middle of a BMW Z3 passenger seat?
Check post #7....explains how
JIm
A handy fix for a 1/4" diameter glass fuse is to use a piece of shaft sawed off of a potentiometer...
Is that before or after you put on the striped apron?
Level: 10k+ Postman
Joined: Tue. Jan 9, 2007
Posts: 12645 View posts
Location: Clay County, Texas, u.S.A.
Do EV have fusible links?
Is a possible FMEA consideration the "slow burn" where a SLA battery case splits spraying battery acid?
Do EV have battery boxes?
(have seen these in medium trucks but usually not present in light trucks)
TIA
gchapman wrote:
Do EV have battery boxes?
OFF TOPIC: If I remember correctly, Thomas Edison's electric vehicle was a commercial failure because his batteries leaked... he could not find a suitable container for the acid. By the time he did, Henry Ford had established the gasoline engine the "winner".
More OT: The Edison battery was nickel-iron with KOH electrolyte. KOH is a slippery long chain, hard to keep. I did some research with sintered plates, and my meter leads wicked up KOH, it oxidized the copper wire.
Level: Moderator
Joined: Mon. Jul 18, 2005
Posts: 100381 View posts
Location: (using avr-gcc in) Finchingfield, Essex, England
Paulvdh wrote:
How do you melt a nice hole through the middle of a BMW Z3 passenger seat?
I used to go and fly planes over at the local park at lunch time when working in an office. So I'd keep a (small) plane in the luggage compartment and a few 3S (11.1V) packs of about 500..800mAh in the car. I used to fit my packs with a 4mm gold socket on the Gnd and a 4mm gold plug on the +ve. Both soldered then heatshrink wrapped(*) to insulate them. What I hadn't realised was that the insulation on one of the flying leads was damaged. I just left the pack on the seat of the car when I went to work for the morning. I guess the leads (quite springy heavy duty multi-core copper cable) had "sprung back" so that one lead touched another. When I came out at lunch I found the inside of the car covered in a "white powder" and a very neat hole right through the middle of the passenger seat (not leather in this model). The really lucky thing is that the pack had clearly short circuited and just ballooned/heated/vented but thankfully had not ignited or I might have been looking at a pile of burnt steel! And this was only something like 560mAh - if it had been a pack for a big plane it could have been much more explosive!
(*) BTW I am utterly crap at soldering and applying heatshrink which may well have been half the problem!!
I am very cautious with LiPo's these days!
Level: 10k+ Postman
Joined: Tue. Jan 9, 2007
Posts: 12645 View posts
Location: Clay County, Texas, u.S.A.
The OT rolls ...
PowerGenix Batteries
The Nickel-Zinc Battery
May 28, 2013
http://powergenix.com/the-nickel-zinc-battery/
...
Behind these unimposing batteries inserted a long history, as the NiZn battery was developed over 100 years ago by none other than Thomas Edison, who in 1901 filed a patent for it. The problem though was that the life of NiZn batteries was very limited. The zinc anode was not stable and broke up gradually to the electrolyte. On top of that quite quickly formed dendrites, which short-circuit the battery cell internally.
...
Use in the car and in the industry
...
... batteries for start-stop systems, ie, the so-called micro-hybrid vehicles in mind. Currently, there are mainly lead-based 12-volt AGM (Absorbent Glass Mat) in use.
...
The batteries for these tests come from a pilot line in Shenzhen in China.
...
Image 2: Voltage curve of a NiZn battery during cold start test current JIS D5301 at -18 ° C
...
The recycling rate should be similar to that of lead-acid batteries, so about 90 percent.
PowerGenix Batteries
Monoblocks
Ross was around when the Edison EV was for sale? Must be a vampire. Did you get to know his buddy George Westinghouse too?
bobgardner wrote:
Ross was around when the Edison EV was for sale? Must be a vampire. Did you get to know his buddy George Westinghouse too?
No... just reasonably well-read.
There is an avr fuse calculator for andriod phones on google play.
There is an avr fuse calculator for andriod phones on google play.
Gee, I didn't know Android phones used an AVR! 
JC
