Using car ignition switch as power button for PCs

[Mr. Man-wai Chang]

On 27/08/16 07:02, Jasen Betts wrote:

On 2016-08-23, Mr. Man-wai Chang <toylet.toylet@gmail.com> wrote:

When the key rotates from <engine on> to <radio on>, would the engine be
turned off instantly? I don't drive...

yeah, that cuts the power to the circuits that operate the engine

What about electric cars? Same design?

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[Mr. Man-wai Chang]

On 27/08/16 14:29, jurb6006@gmail.com wrote:

Anyway, you are climbing up the wrong tree. You put a key switch on a PC, I can beat it with a paperclip.

Understand. But it's still fun to do so!

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/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
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[Mr. Man-wai Chang]

On 27/08/16 15:00, jurb6006@gmail.com wrote:

I would refuse to pilot or drive anything that
was not directly mechanically controlled...
And that includes the new F-35. Look it up.

Well, don't worry! I think the military world-wide is moving to drones
and droids, no more human factors. But then, they will also be
controlled by wires.

--
@~@ Remain silent! Drink, Blink, Stretch! Live long and prosper!!
/ v \ Simplicity is Beauty!
/( _ )\ May the Force and farces be with you!
^ ^ (x86_64 Ubuntu 9.10) Linux 2.6.39.3
不借貸! 不詐騙! 不援交! 不打交! 不打劫! 不自殺! 請考慮綜援 (CSSA):
http://www.swd.gov.hk/tc/index/site_pubsvc/page_socsecu/sub_addressesa

 

[Jasen Betts]

On 2016-08-27, jurb6006@gmail.com <jurb6006@gmail.com> wrote:

"I didn't write my question carefully. I just need the turn-key >mechanism
to replace the power button. "

Ok, I have stayed out of this because I thought it was stupid, but now I know for sure.

First of all, unless you weld the case together,

many cases can be secured with an ordinary padlock such that there is
no access to the indide without damaging the case, some have a key
lock securing the case already.

> Anyway, you are climbing up the wrong tree. You put a key switch on a PC, I can beat it with a paperclip.

if you can pick locks, perhaps.

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[Jasen Betts]

On 2016-08-27, jurb6006@gmail.com <jurb6006@gmail.com> wrote:

"Most Hollywood movies portrayed the turn-key mechanism as >superficial.
You always only needed to short 2 wires to start a car. "

Three. Before alternators four if you wanted to go far. Acually
still four because to go far you have to activate the field coil on
the alternator.

My first had has two wires to the iognition switch, it was charged by
a generator. I'm guessing that the regulator took the generator out of
the circuit when the ignition was turned off.

the starter knob operaters the starter switch which was wired between
the battery and the starter brushes.


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[Jasen Betts]

On 2016-08-27, Mr. Man-wai Chang <toylet.toylet@gmail.com> wrote:

On 27/08/16 07:02, Jasen Betts wrote:
On 2016-08-23, Mr. Man-wai Chang <toylet.toylet@gmail.com> wrote:

When the key rotates from <engine on> to <radio on>, would the engine be
turned off instantly? I don't drive...

yeah, that cuts the power to the circuits that operate the engine

What about electric cars? Same design?

problably similar.


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"My first had has two wires to the iognition switch, it was charged >by
a generator. I'm guessing that the regulator took the generator out >of
the circuit when the ignition was turned off. "

Yes, it had to or the generator would kill the battery. It is not necessary now because the alternator has rectifiers that prevent that.

Many may have forgotten that back in those days if you didn't polarize the generator you might have a positive ground system and never know it.

The blower motor for the heater (if so equipped) might not be a permanent magnet type, so it will run the same direction. It doesn't matter which way the wiper otor ran (if so equipped, some used vacuum). The light bulbs didn't care. Ad even the radio would work because it may have used battery voltage for the filaments of the tubes, it used a vibrator for the B+ and that would be + no matter what polarity of voltage was applied to it. The spark plugs still sparked just fine. It may have bothered your cellphone charger but...