I'm off to bed now.
Best of luck to-morrow ( i think its to morrow)

Let us know how it goes.

Cheers, John

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Ah. Thank you again John and Torben. What you have said makes sense. And thanks for the compliment, John. I must admit though that it's not easy for me either to understand. I really have to think about it. For now, I think that, just to prevent my head from exploding anytime soon, I'm going to go study some math. Then I'll go back to understanding this alarm and I should be able to get it all. When I do, I'll make a post explaining how each of the components work.

Well, there's only the photocell and how when electromagnetic radiation--laser light-- is applied to it, the electrons are liberated from the cell (the photoresistor lowers its resistance), thus showing the photoelectric effect.
Then the transistor, which acts like an amplifying switch (I hope I got this right). I'm going to read what you two wrote again after math studying.
Then the resistor, which controls the current.

Yeah, I know I should go to bed. But I have a math test to study for too. Also, I took a power nap (these are awesome!) after I came back from school so I'm not exactly too sleepy.

 

i am definitely going to bed now,
my cat has come back in, and she is shouting at me (in a cat voice)
i dunno why.
maybe cos i should be in bed

Goodnight see ya later, John

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Sounds like you're getting it. I'll still be online for a while. If you have more questions tonight I'll do my best to help.


Torben

 

Alright, good night (morning?) John. Please apologize to your cat for me.

And, ok Torben, thanks.

 

Well I think I know it.

 

So? What happened? Teacher like it or roast ya?


Torben

 

Mmm ...

Maybe there was someone there with a Higg's Bosun in a sock,
maybe the laser slipped and caught the tutor in the eye ...

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Well...let's just say that he did ask about the flow of current/electrons. Sniff. Gotta go for now. Another math test tomorrow -_-;

 

Dang. Hope you remembered that electrons flow from negative to positive.

Anyway, I hope it went OK overall. Good luck with the math test.


Torben

 

dudes.........cud anyone out there gimme some walkie talkie circuits

 

Please don't hijack other people's threads; start your own.

I suggest googling "walkie talkie schematic".


Torben

 

Hi Torben,
Yes this came up earlier,

This was the comment from Anonymous, and she has quoted the direction correctly, i dont see that
this should invite any problems. There seems to be no doubt as to direction.

However,
it seems the tutor did ask about ... " " the flow of current/electrons " "
and this was followed by " Sniff " , and an unhappy face.
followed by ... Gotta go for now.

So, maybe that bit didn't go well.
But i hope the rest went alright.

I would be very interested to find what was asked about "current/electrons",
and of course what was given as an answer.

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And i hope the Maths exam went well for you.

Cheers, John

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Hi John,

I'm a little confused. Why did you copy out half of Anon's email for me? English is my first language; I had no trouble understanding it.


Torben

 

Hi Torben,

I was agreeing with you.
And confirming that she mentioned it correctly before.

It wasn't just for you, i copied out a bit from before cos this thread has a lot of watchers,
and many of them may not look back to earlier posts.

I would still like to know what was asked about "current/electrons"
from the tone of Anonymous' post, that bit may not have gone well.

I think we both know that some people will bring up aspects of the well known "electric flow"
alternatives, sometimes just to generate "lively discussion".
Very often this can just confuse people.

John

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