Fuse Guide

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Not sure if this belongs here or in the megavr and tinyavr forum devil

 

Ross McKenzie ValuSoft Melbourne Australia

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Perhaps that is the Australian version.  The US version would need to include a penny.

 

 

You can put lipstick on a pig, but it is still a pig.

I've never met a pig I didn't like, as long as you have some salt and pepper.

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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.

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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. 

The largest known prime number: 282589933-1

It's easy to stop breaking the 10th commandment! Break the 8th instead. 

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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

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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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.

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Simonetta wrote:
I didn't notice until I saw the melted black plastic of the battery holder dripping onto the floor.
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!

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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.

It all starts with a mental vision.

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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!

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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.

It all starts with a mental vision.

Last Edited: Wed. Sep 21, 2016 - 12:51 AM
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Hi Clawson,

How do you melt a nice hole through the middle of a BMW Z3 passenger seat?

Doing magic with a USD 7 Logic Analyser: https://www.avrfreaks.net/comment/2421756#comment-2421756

Bunch of old projects with AVR's: http://www.hoevendesign.com

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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

I would rather attempt something great and fail, than attempt nothing and succeed - Fortune Cookie

 

"The critical shortage here is not stuff, but time." - Johan Ekdahl

 

"Step N is required before you can do step N+1!" - ka7ehk

 

"If you want a career with a known path - become an undertaker. Dead people don't sue!" - Kartman

"Why is there a "Highway to Hell" and only a "Stairway to Heaven"? A prediction of the expected traffic load?"  - Lee "theusch"

 

Speak sweetly. It makes your words easier to digest when at a later date you have to eat them ;-)  - Source Unknown

Please Read: Code-of-Conduct

Atmel Studio6.2/AS7, DipTrace, Quartus, MPLAB, RSLogix user

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A handy fix for a 1/4" diameter glass fuse is to use a piece of shaft sawed off of a potentiometer...

Tom Pappano
Tulsa, Oklahoma

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Is that before or after you put on the striped apron?

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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

 

"Dare to be naïve." - Buckminster Fuller

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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".

Ross McKenzie ValuSoft Melbourne Australia

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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.

It all starts with a mental vision.

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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!

 

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The OT rolls ...

PowerGenix Batteries

PowerGenix Batteries

The Nickel-Zinc Battery

by Mathias Bloch

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

http://powergenix.com/monoblocks/

 

"Dare to be naïve." - Buckminster Fuller

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Ross was around when the Edison EV was for sale? Must be a vampire. Did you get to know his buddy George Westinghouse too?

 

Imagecraft compiler user

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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.

 

Ross McKenzie ValuSoft Melbourne Australia

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There is an avr fuse calculator for andriod phones on google play.

 

Imagecraft compiler user

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There is an avr fuse calculator for andriod phones on google play.

Gee, I didn't know Android phones used an AVR! wink

 

JC 

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yes

David (aka frog_jr)