Simple TL-082 oscillator not working

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#1
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hi,

 

I've put together a simple TL-082CN oscillator circuit on a breadboard but all I get on the scope is the 5V Vcc, no oscillation whatsoever, on either of the outputs. I've tried different value resistors and capacitors, same thing. Here is the schematic:

 

TL-082 oscillator circuit

 

taken from here:

 

http://www.piclist.com/images/ww...

 

does the circuit look correct to you? The negative pin in my circuit is connected to ground, could that be the reason?

 

thanks

Last Edited: Mon. Mar 2, 2015 - 11:36 PM
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What do you mean by "negative pin in my circuit" ?

 

An OpAmp generally has +VCC = +12V and -VCC = -12V.    Obviously GND is 0V.

You can probably get away with +6V, -6V, 0V or even +5V, -5V, 0V and have a degraded performance.

 

You just have to read the TL082 data sheet.

 

David.

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hi,

 

oops, I rushed with the topic. Yep, I need virtual ground for this to work and 5V is not enough.