I would like to use the ST TL072CN OP amp and create a one channel mixer. I have an external variable power supply. I hooked up the op amp to my cd player and out of the op to a powered speaker and was able to play music but it had alot of distortion. I guess cause I dont have any capacitors or resisters connected. Can someone explain what the resistors and capacitors would do in circuit and why I would need it and where I would place them in circuit.
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Re: ST TL072CN OP Amp connectivity
Can we see your diagram so I can tell what is going on? Are you using BI-polar power supply?
This is great website for DIY audio project:
http://sound.westhost.com/projects.htmNever stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809 -
Re: ST TL072CN OP Amp connectivity
Sorry I don't have a diagram. I used the pin outs below.
1 - Output 1
2 - Inverting input 1
3 - Non-inverting input 1
4 - VCC-
5 - Non-inverting input 2
6 -Inverting input 2
7 - Output 2
8 - VCC+
I connected my cd player to pin 5 as positive and pin 6 as negative. I used pin 7 from the op to my powered speaker and heard music but it was distorted. Also where would I would I hookup a potentiometer for volume?Comment
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Re: ST TL072CN OP Amp connectivity
No feedback resistors, coupling caps, nothing? It is not that simple.
Please see the web site I provide to get basic understanding first.
Last edited by budm; 07-13-2012, 04:22 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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