Breaking News
Comments
Newest First | Oldest First | Threaded View
Page 1 / 2   >   >>
MarvA2
User Rank
Author
re: My MP3 player won't shut up
MarvA2   4/1/2013 6:15:08 PM
NO RATINGS
I've had to use the 7-second rule on the power button on every computer that I've dealt with in the last 10 years (Don't anyone tell my wife that I've told her 10 seconds so her impatience won't cause the hard shutdown process to fail.). The process usually works and shuts off the power supply OK. This shutdown process works only when the CPU is the one to go dumb and needs power removed so it can start over. I've had to remove the battery at some point from 2 different laptops and the power cord from every one of the desktops I've owned in the last 10 years. The last incident was probably 6 months ago. You would think that the timer circuit would be so simple that nothing could go wrong but we've all seen ample evidence that Murphy cannot be defeated.

Ken Davidson
User Rank
Author
re: My MP3 player won't shut up
Ken Davidson   4/1/2013 4:08:19 PM
NO RATINGS
On most PCs built in the last decade, if the computer is locked up and won't respond to any soft buttons, press and hold the power button for at least five seconds and it will be forced off. It's worked for every desktop and laptop machine I've ever tried it on. No need to yank power sources.

Duane Benson
User Rank
Author
re: My MP3 player won't shut up
Duane Benson   3/31/2013 12:13:20 AM
NO RATINGS
A number of home PC systems don't have a hard power switch on the back side. The theory, of course, being that the software will always shut-down the computer. That works well... Not. Fortunately, with the case of a desktop PC, the power cord can always be yanked. I've had to remove a laptop battery once for the same reason.

WKetel
User Rank
Author
re: My MP3 player won't shut up
WKetel   3/29/2013 2:50:45 PM
NO RATINGS
I agree. And what about those stupid cars that have one button to ask the computer to "please start", and the same button for "please stop", the problem being that the computer would decide to not shut off the engine because the car was in motion, when the reason for requesting the stop was engine runaway. That is what is known as "a clearly obvious engineering error".

WKetel
User Rank
Author
re: My MP3 player won't shut up
WKetel   3/29/2013 2:46:59 PM
NO RATINGS
Even worse with some diesel engines is that if the vehicle rolls over, enough lube oil can get into the cylinders to keep the engine running for quite a while. That is a bad show all around. Some of them now have an air-shutoff valve for emergency stop.

IDontUseTheForumSoWhyAmIForc
User Rank
Author
re: My MP3 player won't shut up
IDontUseTheForumSoWhyAmIForc   3/28/2013 6:12:27 PM
NO RATINGS
Many, many moons ago I worked with Fuel Management Dispensing Systems for places with their own fleet of vehicles and gas pumps. Due to local bylaws, some locations required locking emergency stop buttons to be beside the pumps. All of these were wired to completely disconnect the power source in the event of an emergency (usually spill related). Can you imagine if this was designed with a soft switch? I'd hate to be the guy that has to hold the button for 10 seconds as gasoline flows freely all around me. Not to mention the possibility of a spark when working with a live circuit.

mac_droz
User Rank
Author
re: My MP3 player won't shut up
mac_droz   3/28/2013 3:58:31 PM
NO RATINGS
You press a clutch and break and you stop straight away. One of the advantages of manual drive is that if the engine goes funny just disconnect it mechanically using a clutch. I remember when an "unexpected acceleration bug" happened with Toyota cars it was hard for many people here in Europe to understand where the problem was - everyone would just say: can't you just press a clutch?

boblespam
User Rank
Author
re: My MP3 player won't shut up
boblespam   3/28/2013 1:45:36 PM
NO RATINGS
Much worse: in some Renault Scenic cars running on Diesel fuel, there happened a crack in the engine crankcase that had for effect that the engine lubrification oil could go into the engine combustion chambers. This way the diesel engine (which can also run on oil when sufficiently hot) was running on its own with the accelerator pedal having absolutely no effect. No way to switch off the engine (there is no spark plug in a diesel block), no way to reduce RPM except running uphill (or in a tree). This "feature" scaried a few french drivers (on hiways) but thanks chance, killed nobody (as far as I know). Renault didn't talk alot about this. The only way to stay alive in that case is to brake as hard as possible and hope the brakes won't overheat until the car stops. As it's a manual geared car, if you press the clutch pedal, the car may slow down but the engine goes up in the RPM like hell, without any limit. Terrifying for the driver and passengers.

rick merritt
User Rank
Author
re: My MP3 player won't shut up
rick merritt   3/27/2013 9:05:18 PM
NO RATINGS
Goodnight, HAL

selinz
User Rank
Author
re: My MP3 player won't shut up
selinz   3/27/2013 6:29:00 PM
NO RATINGS
I have often found myself in a meeting where my computer has "locked up" and requires a restart. The only method that I had to silently restart was to pull a pair of earphones out of my pocket and plug them in. Of course, this would have worked fine (presumably) with a cheap MP3 player..

Page 1 / 2   >   >>


Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
Radio
NEXT UPCOMING BROADCAST

What are the engineering and design challenges in creating successful IoT devices? These devices are usually small, resource-constrained electronics designed to sense, collect, send, and/or interpret data. Some of the devices need to be smart enough to act upon data in real time, 24/7. Are the design challenges the same as with embedded systems, but with a little developer- and IT-skills added in? What do engineers need to know? Rick Merritt talks with two experts about the tools and best options for designing IoT devices in 2016. Specifically the guests will discuss sensors, security, and lessons from IoT deployments.
Most Recent Comments
dnadler017
 
realjjj
 
realjjj
 
jimfordbroadcom
 
jimfordbroadcom
 
resistion
 
jimfordbroadcom
 
jimfordbroadcom
 
realjjj
Like Us on Facebook
Special Video Section
LED lighting is an important feature in today’s and future ...
05:27
The LT8602 has two high voltage buck regulators with an ...
05:18
The quality and reliability of Mill-Max's two-piece ...
01:34
Why the multicopter? It has every thing in it. 58 of ...
Security is important in all parts of the IoT chain, ...
Infineon explains their philosophy and why the multicopter ...
The LTC4282 Hot SwapTM controller allows a board to be ...
This video highlights the Zynq® UltraScale+™ MPSoC, and sho...
Homeowners may soon be able to store the energy generated ...
The LTC®6363 is a low power, low noise, fully differential ...
See the Virtex® UltraScale+™ FPGA with 32.75G backplane ...
Vincent Ching, applications engineer at Avago Technologies, ...
The LT®6375 is a unity-gain difference amplifier which ...
The LTC®4015 is a complete synchronous buck controller/ ...
10:35
The LTC®2983 measures a wide variety of temperature sensors ...
The LTC®3886 is a dual PolyPhase DC/DC synchronous ...
The LTC®2348-18 is an 18-bit, low noise 8-channel ...
The LT®3042 is a high performance low dropout linear ...