it could be a photo electrode, I'm not sure. A capacitor HAS to have some non conductive material between the two conductors, thats how they work!
If it was light dependent then it would not be possible to turn on the monitor in a dark room. The capacitive method works because you must have AC power nearby to operate the monitor, and therefore your body is guaranteed to pick up the necessary low level AC energy.
I was sure that when I took my Cube to bits I was still able to use the power switch without the case in place. Or maybe I dreamt that.
How's the weather in Edinburgh?
The weather is good up here - too many damn tourists mind! As for the power switch, I bet there was still an insulating layer of plastic over the metal of the switch....
Capacitor makes sense, I just don't get how the current would be strong enough to travel through the insulator that thick.
There is no current! Nothing flows through the insulator except for an electric field. There is no movement of electrons from one conductor to the other. The electric field, not a flow of current, allows the switch to 'know' there there is a conductor on the other side, and hence turn the display on/off.
There is no current! Nothing flows through the insulator except for an electric field. There is no movement of electrons from one conductor to the other. The electric field, not a flow of current, allows the switch to 'know' there there is a conductor on the other side, and hence turn the display on/off.
Alright, if you want to be picky, energy flows through the insulator, and that energy results in electron movement on both sides of the capacitor. Connect a resistor in series with a capacitor to an AC power source. I assure you there will be AC current flowing on both sides of the capacitor and power will be dissipated in the resistor.
How will robot droids adapt to a world built around obvious personal prejudices against what is not considered "human?"
Just because they are cold to the touch, does not mean they are not warm in the heart. Why is it those "humans" against the robots are so cold-hearted that they can activate a heat-sensitive switch? I am saddened by this world's aversion to difference. Woe?
AC loops create a changing magnetic field. This magnetic field can, in turn, create a current on a nearby conductive surface... just little eddie currents. This induction, however, takes a smidge bit of power, which can be detected. So, what's happening is that any conductive surface will take away a little bit of power from the AC loop, which the button senses. Hence the paperclip, and the way it goes through the paper.
This is also how those sensors on traffic lights work, only on a much smaller scale.
AC loops create a changing magnetic field. This magnetic field can, in turn, create a current on a nearby conductive surface... just little eddie currents. This induction, however, takes a smidge bit of power, which can be detected. So, what's happening is that any conductive surface will take away a little bit of power from the AC loop, which the button senses. Hence the paperclip, and the way it goes through the paper.
This is also how those sensors on traffic lights work, only on a much smaller scale.
AC loops create a changing magnetic field. This magnetic field can, in turn, create a current on a nearby conductive surface... just little eddie currents. This induction, however, takes a smidge bit of power, which can be detected. So, what's happening is that any conductive surface will take away a little bit of power from the AC loop, which the button senses. Hence the paperclip, and the way it goes through the paper.
This is also how those sensors on traffic lights work, only on a much smaller scale.
AC loops create a changing magnetic field. This magnetic field can, in turn, create a current on a nearby conductive surface... just little eddie currents. This induction, however, takes a smidge bit of power, which can be detected. So, what's happening is that any conductive surface will take away a little bit of power from the AC loop, which the button senses. Hence the paperclip, and the way it goes through the paper.
This is also how those sensors on traffic lights work, only on a much smaller scale.
And what, excatly, is Eddie doing in the currants?
Comments
How would a capacitor work when it's hidden behind a non conductive plastic - i.e. the cubes case?
Originally posted by Messiah
I thought they used a light sensitive device - if only I could remember what they where called.
How would a capacitor work when it's hidden behind a non conductive plastic - i.e. the cubes case?
it could be a photo electrode, I'm not sure. A capacitor HAS to have some non conductive material between the two conductors, thats how they work!
Originally posted by Matt FT
it could be a photo electrode, I'm not sure. A capacitor HAS to have some non conductive material between the two conductors, thats how they work!
Umm.
I was sure that when I took my Cube to bits I was still able to use the power switch without the case in place. Or maybe I dreamt that.
How's the weather in Edinburgh?
Originally posted by Matt FT
it could be a photo electrode, I'm not sure. A capacitor HAS to have some non conductive material between the two conductors, thats how they work!
If it was light dependent then it would not be possible to turn on the monitor in a dark room. The capacitive method works because you must have AC power nearby to operate the monitor, and therefore your body is guaranteed to pick up the necessary low level AC energy.
Originally posted by Messiah
Umm.
I was sure that when I took my Cube to bits I was still able to use the power switch without the case in place. Or maybe I dreamt that.
How's the weather in Edinburgh?
The weather is good up here - too many damn tourists mind! As for the power switch, I bet there was still an insulating layer of plastic over the metal of the switch....
Originally posted by ast3r3x
Capacitor makes sense, I just don't get how the current would be strong enough to travel through the insulator that thick.
There is no current! Nothing flows through the insulator except for an electric field. There is no movement of electrons from one conductor to the other. The electric field, not a flow of current, allows the switch to 'know' there there is a conductor on the other side, and hence turn the display on/off.
Originally posted by Matt FT
There is no current! Nothing flows through the insulator except for an electric field. There is no movement of electrons from one conductor to the other. The electric field, not a flow of current, allows the switch to 'know' there there is a conductor on the other side, and hence turn the display on/off.
Alright, if you want to be picky, energy flows through the insulator, and that energy results in electron movement on both sides of the capacitor. Connect a resistor in series with a capacitor to an AC power source. I assure you there will be AC current flowing on both sides of the capacitor and power will be dissipated in the resistor.
Just because they are cold to the touch, does not mean they are not warm in the heart. Why is it those "humans" against the robots are so cold-hearted that they can activate a heat-sensitive switch? I am saddened by this world's aversion to difference. Woe?
No magic, no nothin'.
AC loops create a changing magnetic field. This magnetic field can, in turn, create a current on a nearby conductive surface... just little eddie currents. This induction, however, takes a smidge bit of power, which can be detected. So, what's happening is that any conductive surface will take away a little bit of power from the AC loop, which the button senses. Hence the paperclip, and the way it goes through the paper.
This is also how those sensors on traffic lights work, only on a much smaller scale.
Originally posted by bauman
OK... Here's the way it works, once and for all.
No magic, no nothin'.
AC loops create a changing magnetic field. This magnetic field can, in turn, create a current on a nearby conductive surface... just little eddie currents. This induction, however, takes a smidge bit of power, which can be detected. So, what's happening is that any conductive surface will take away a little bit of power from the AC loop, which the button senses. Hence the paperclip, and the way it goes through the paper.
This is also how those sensors on traffic lights work, only on a much smaller scale.
Personally I'm a big fan of rocker switches.
Originally posted by bauman
OK... Here's the way it works, once and for all.
No magic, no nothin'.
AC loops create a changing magnetic field. This magnetic field can, in turn, create a current on a nearby conductive surface... just little eddie currents. This induction, however, takes a smidge bit of power, which can be detected. So, what's happening is that any conductive surface will take away a little bit of power from the AC loop, which the button senses. Hence the paperclip, and the way it goes through the paper.
This is also how those sensors on traffic lights work, only on a much smaller scale.
Thank you.
Originally posted by bauman
OK... Here's the way it works, once and for all.
No magic, no nothin'.
AC loops create a changing magnetic field. This magnetic field can, in turn, create a current on a nearby conductive surface... just little eddie currents. This induction, however, takes a smidge bit of power, which can be detected. So, what's happening is that any conductive surface will take away a little bit of power from the AC loop, which the button senses. Hence the paperclip, and the way it goes through the paper.
This is also how those sensors on traffic lights work, only on a much smaller scale.
And what, excatly, is Eddie doing in the currants?
Originally posted by Anders
And what, excatly, is Eddie doing in the currants?
http://www.howstuffworks.com/question42.htm
http://www.bytecraft.com/touchsw.html
http://www.electronickits.com/kit/co...lec/ck1606.pdf
http://www.wireheading.com/brainstim/thought.html
http://www.wireheading.com/orgasmatron/index.html