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 Forum index » How-tos » Production - engineering/mixing
TL082 based 1KHz Sine/Cosine Wave Oscillator schematic
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Sinusoid



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

PostPosted: Thu Mar 15, 2012 9:17 am    Post subject:  TL082 based 1KHz Sine/Cosine Wave Oscillator schematic
Subject description: Please help
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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
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Antimon



Joined: Jan 18, 2005
Posts: 3730
Location: Sweden
Audio files: 275
G2 patch files: 96

PostPosted: Fri Mar 16, 2012 4:07 am    Post subject: Reply with quote  Mark this post and the followings unread

I can't help you, just want to point out that this kind of question might work better in the DIY forum. Smile
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Mongo1



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

PostPosted: Fri Mar 16, 2012 7:47 am    Post subject: Reply with quote  Mark this post and the followings unread

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
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Sinusoid



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

PostPosted: Sat Mar 17, 2012 9:48 am    Post subject: Reply with quote  Mark this post and the followings unread

Mongo1 wrote:
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


Thanks Gary,

Really appreciate it. That's what I was looking for.

Will try to build it now =)
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