Help with oscillator chip

P

Patrick Leonard

Guest
I have one of those can-type crystal oscillator chips (2 Mhz) that uses only
2 leads. Could someone tell me how to wire this thing up? Do I simply
apply a voltage across it, and that will result in its oscillating? What
voltage do I use?


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"Patrick Leonard" <transactoid@rogers.com> wrote in message
news:yTs8b.7561$Rm1.1723@news02.bloor.is.net.cable.rogers.com...
I have one of those can-type crystal oscillator chips (2 Mhz) that uses
only
2 leads. Could someone tell me how to wire this thing up? Do I simply
apply a voltage across it, and that will result in its oscillating? What
voltage do I use?
Click to expand...
There are lots of ways. Don't just apply voltage across it, that won't do
anything.

You need an active device like a transistor or inverter IC.

Try searching the web for 'crystal oscillator schematic'.

Regards
Bob Monsen
 
You likely have a crystal, which is only one of the component of a typical
crystal oscillator. It acts sort of like a very high "Q" LC combination.
There are many different circuit configurations that can be employed (and
not all will necessarily work so well for your particular device). Do a
Google search on, say, "crystal oscillator configurations" to get some
ideas. Here is one link that might be useful http://www.z80.info/uexosc.htm
..

--
Remove the "jam" if by email.


Patrick Leonard <transactoid@rogers.com> wrote in message
news:yTs8b.7561$Rm1.1723@news02.bloor.is.net.cable.rogers.com...
I have one of those can-type crystal oscillator chips (2 Mhz) that uses
only
2 leads. Could someone tell me how to wire this thing up? Do I simply
apply a voltage across it, and that will result in its oscillating? What
voltage do I use?


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.512 / Virus Database: 309 - Release Date: 19/08/2003
Click to expand...
 
Patrick Leonard wrote:
I have one of those can-type crystal oscillator chips (2 Mhz) that uses only
2 leads. Could someone tell me how to wire this thing up?
Click to expand...
To what ?
What will you use it for ?

Jan-Erik.
 
Nothing, really. I just want to look at its output on an oscope.

"Jan-Erik Söderholm" <aaa@aaa.com> wrote in message
news:3F631752.BED03477@aaa.com...
Patrick Leonard wrote:

I have one of those can-type crystal oscillator chips (2 Mhz) that uses
only
2 leads. Could someone tell me how to wire this thing up?

To what ?
What will you use it for ?

Jan-Erik.
Click to expand...

---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
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Well, you can't. What you have is most probaby a "crystal".
It doesn't have any "output", and it can't do anything without
an oscilator.

Now, with just two pins, and after connecting power and ground,
where did you thought the "signal" would exit anyway ?

Jan-Erik.


Patrick Leonard wrote:
Nothing, really. I just want to look at its output on an oscope.

"Jan-Erik Söderholm" <aaa@aaa.com> wrote in message
news:3F631752.BED03477@aaa.com...
Patrick Leonard wrote:

I have one of those can-type crystal oscillator chips (2 Mhz) that uses
only
2 leads. Could someone tell me how to wire this thing up?

To what ?
What will you use it for ?

Jan-Erik.

---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.512 / Virus Database: 309 - Release Date: 19/08/2003
Click to expand...
 
Well, you can't. What you have is most probaby a "crystal".
It doesn't have any "output", and it can't do anything without
an oscilator.

Now, with just two pins, and after connecting power and ground,
where did you thought the "signal" would exit anyway ?
Click to expand...
.....hence my original post :)



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Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
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Hi Jan-Erik,


Now, with just two pins, and after connecting power and ground,
where did you thought the "signal" would exit anyway ?
Click to expand...
Not that it's done (AFAIK), but it could be - if current driven :)

Something like this:

O V+
|
[Resistor]
|
+---O Output
|
[Oscillator]
|
/


--
Regards,
Soeren

* If it puzzles you dear... Reverse engineer *
 
"Patrick Leonard" <transactoid@rogers.com> wrote in message
news:yTs8b.7561$Rm1.1723@news02.bloor.is.net.cable.rogers.com...
I have one of those can-type crystal oscillator chips (2 Mhz) that uses
only
2 leads. Could someone tell me how to wire this thing up? Do I simply
apply a voltage across it, and that will result in its oscillating? What
voltage do I use?
Click to expand...
Any moderately fast inverter will work. In particular, 74HCT04 or the 4049
will both work.

R1 220k
___
+--|___|--+
| |
| |
| |\ |
+---| >O--+
| |/ |
| .-.
| | |
| | | R2 220
| _ '-'
| | | |
+--|| ||--+
| |_| |
--- ---
--- ---
| | C1 = C2 = 22pF
+---------+
|
===
GND
created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de
 
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