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Trouble building an Oscillator

Chad Potter

Jan 6, 2014
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Jan 6, 2014
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I need someone to help me figure out a schematic used for constructing a square-wave oscillator over any form of private chat. Facebook, Skype, oovoo, even this site. It doesn't matter, I just really need someone's help within the next few hours. Details (including the schematic) will be provided in private messaging. Thanks :)
 

davenn

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Sep 5, 2009
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hi chad
welcome to the forums :)

did you try google there's many circuits available

google circuit for a square wave oscillator and have a look at the choices

cheers
Dave
 

Chad Potter

Jan 6, 2014
6
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Jan 6, 2014
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Thanks Dave :)

As a matter of fact, I have looked all around google. There is one specific type I'm trying to create and it's creator doesn't exactly give a full description of the connections :p thus my dilemma.
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Jan 21, 2010
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Post the schematic and the problems you're having (is it identifying which lead is which?).

We can't promise instant response, but there's a few people around now, so you might be lucky.
 

Chad Potter

Jan 6, 2014
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My problem is that I don't know how to connect the potentiometers and 9v power jack to the circuit board.
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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The long end of the battery on the diagram is the +ve end. The short end is the -ve end.

The pins 7 and 4 on your IC (from your schematic) connect to the points labelled +4.5 and -4.5. All the ground symbols are conected together,.

Is that what you're having problems with?
 

davenn

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7 to +4.5 and 4 to -4.5?

yes, correct

Do you understand what they are doing there ?

Taking a 9V battery and creating a + and - rail power supply
Feeding the battery to the top and bottom of those 2 10k resistors
they are called a voltage divider in that configuration, and they generate a 0V (GND) rail at the point between the 2 resistors

cheers
Dave
 

davenn

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just as it is shown

the LED goes across the battery with the 4.7k resistor in series

be aware there is no power switch shown, therefore there is power to the LED and the oscillator circuit ALL the time
A switch should go between the top of the battery and that "T" connection above it

Dave
 
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