TL082 based 1KHz Sine/Cosine Wave Oscillator schematic

Sinusoid · Joined: Mar 08, 2012 Posts: 5 Location: Estonia

Hello guys,

I am a total noob, just wanted to straight that out from very beginning, so please don't be too harsh on me.

Really need your help as I have to build a 1Khz oscillator which should be based on TL082 and it has to give out the sine and cosine wave-forms

I have found a schematic online:

http://www.eleccircuit.com/sinecosine-wave-oscillator-by-tl082/

but I have no idea how to get a 1Khz frequency there.

Could you please help me out?

Will really appreciate any help.

Thank you

Antimon · Posted: Fri Mar 16, 2012 4:07 am Post subject:

I can't help you, just want to point out that this kind of question might work better in the DIY forum. Smile

Mongo1 · Joined: Aug 11, 2011 Posts: 411 Location: Raleigh NC

Hi - I found a website that has that circuit plus the formula to determine the frequency -

http://www.massmind.org/images/www/hobby_elec/e_ckt20.htm

You'll just have to work the formula backwards a bit, and you should be good.

Note that in the example, he's using .001 uF caps, and 15K resistors to get 10.585 Khz. I think if you just bumped your caps up to be .01 uF, you'd probably be in the ballpark (about 1060). You could replace the 15K resistors with something like 12K resistors in series with a dual 5K pot so you could adjust the frequency to an exact point if you wanted to.

Gary

Sinusoid · Joined: Mar 08, 2012 Posts: 5 Location: Estonia