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Old 3rd August 2006, 07:30 PM   #1
Default A few questions.

1. What is a Schmitt Trigger?
2. What is a Schottky? (and how is it pronounced?)
3. What is a compariator, how does it work? Is it digtial? What could they be used for?
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Old 3rd August 2006, 07:32 PM   #2
Default

How about "What is google?".
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Old 3rd August 2006, 07:44 PM   #3
Default

Comparator outputs a 1 or 0 depending if one input signal is higher than a second signal (a comparator compares).

SChotky is a type of very fast, low forward drop diode, with high leakage currents. It does this by a metal-silicon junction if I remmeber right, rather than a silicon-silicon junction (you need to know a lot more to understand the details).

Schmitt trigger means that there are two separate thresholds between a 1 and a zero, not just one. It provides noise immunity. If 0V is the threshold noise might make it be + or - and it would jump between 1 and 0. With Schmitt, it's kind of likey you need to pass -1V to go from 1->0 and you need to pass 1V to from 0->1. Google explains it much better.
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Old 3rd August 2006, 08:42 PM   #4
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Quote:
Originally Posted by Nigel Goodwin
How about "What is google?".


1. What is the meaning of life?
2. What is the purpose for trillions of stars?
3. What is a Creator? How does He work? Is he diety? What could we be used for in the Master Plan?
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Last edited by HiTech; 3rd August 2006 at 08:46 PM.
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Old 3rd August 2006, 09:30 PM   #5
Default

Quote:
Originally Posted by Marks256
1. What is a Schmitt Trigger?
2. What is a Schottky? (and how is it pronounced?)
3. What is a compariator, how does it work? Is it digtial? What could they be used for?
2 - Schottky is pronounced "Shot-key"
3 - Comparators have analog inputs and a digital output, usually open collector.

What does "open-collector" mean, that's your homework for this evening.
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Old 3rd August 2006, 10:27 PM   #6
Default

Quote:
1. What is the meaning of life?
I'm not sure. I would have to say; "We are here to make our own purpose".

Quote:
2. What is the purpose for trillions of stars?
There is no purpose. They just happened.

Quote:
3. What is a Creator? How does He work? Is he diety? What could we be used for in the Master Plan?
I'm sorry if this offends anyone, but i am an evolutionist. I don't believe in god. I think the word is atheist? I believe that the universe was a direct cause of "The big bang".


If you were just saying that my questions should be answered from Google, three people have already said that.


Quote:
What does "open-collector" mean, that's your homework for this evening.
I will do that. Only if i remember. I am very forgetful. I am actually working on my first home made project, so i am kind of side-tracked as of right now. I will look on Google when i get time.


Quote:
Is he diety?
Actually, i think that is spelt; deity.
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Old 4th August 2006, 02:39 AM   #7
Default

Quote:
Originally Posted by Marks256
1. What is a Schmitt Trigger?
2. What is a Schottky? (and how is it pronounced?)
3. What is a compariator, how does it work? Is it digtial? What could they be used for?
1. comparator
2. digital

I second the 'use google' motion. Your spelling will need to be pretty close to get hits in google.
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Old 4th August 2006, 03:18 AM   #8
Default

Quote:
Originally Posted by Marks256
Actually, i think that is spelt; deity.
Dude, you just got told.
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Old 4th August 2006, 03:27 AM   #9
Default

Quote:
1. comparator
2. digital

I second the 'use google' motion. Your spelling will need to be pretty close to get hits in google.
See, poopeater, this is what i don't get. I ask you nicely, and i asked you more aggressively. What don't you get about stopping? Huh? What are you getting out of making me very angry? If it is some sort of "thrill", it is a very dangerous thrill to be enjoying. Why don't you correct everybody else's spelling? I seriously cant take your crap anymore. STOP IT! PLEASE! I never did anything to you(initially). Why do you keep harassing me and my posts?

Quote:
Dude, you just got told.
Who? Him or I?
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Old 4th August 2006, 05:11 AM   #10
Default

Poopeater is taking it out on you because he must be very miserable now, living in the middle of a dezzert in Phoenix AZ in the middle of summer. I was there and boy oh boy oh boy oh boy is it ever hot there. There are lizards running around all over the place!
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Old 4th August 2006, 05:52 AM   #11
Default

Quote:
Originally Posted by Marks256
See, poopeater, this is what i don't get. I ask you nicely, and i asked you more aggressively. What don't you get about stopping? Huh? What are you getting out of making me very angry? If it is some sort of "thrill", it is a very dangerous thrill to be enjoying. Why don't you correct everybody else's spelling? I seriously cant take your crap anymore. STOP IT! PLEASE! I never did anything to you(initially). Why do you keep harassing me and my posts?


Who? Him or I?
THe one who was in the wrong.
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Old 4th August 2006, 09:45 AM   #12
Default

I learn school that an op-amp can be configured to work just like a comparator. The difference is that op-amps are slower.

Please clarify me if I am wrong.
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Old 4th August 2006, 10:40 AM   #13
Default

@Mark: People who can read should take advantage of this fine skill.
What did I just say!? Do a search in google before you ask in a forum!
Plus that you really should join an anti-aggression-therapy

Quote:
Who? Him or I?
Hmm... is that correct ? Shouldn't it be "me" ?
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Old 4th August 2006, 02:04 PM   #14
Default

Of course an opamp can be used for a slow comparator, but its output isn't an open collector.

Maybe Mark comes from a part of his city that has many non-english-speaking people and their bad spelling is rubbing off on him. Maybe his teachers are non-english-speaking.
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Old 4th August 2006, 02:11 PM   #15
Default

Last time I was in graduate school all the professors were non-native speakers of English.
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