TheLacasse
- Jun 8, 2015
- 15
- Joined
- Jun 8, 2015
- Messages
- 15
Excuse my english
Hi I'm a beginer and I want to amplify the music that out of my iPod using an op amp. I used an app on my iPod that generate sin wave to figure out what is the maximum voltage that my iPod can deliver it turn out that it's around 0.25V. I want my LM324 to output 5V when my iPod deliver 0.25V so the gain of the op amp need to be 5V/0.25V=20 for that I used 2 resistor to set the gain of the op amp 1+100K/5.25K=20.0476. The problem is that when my iPod deliver 0.25V the op amp don't output 5V but around 2.25V also when I disconnect my iPod of the op amp the output voltage of the LM324 goes up to it supply voltage I don't want to wreck my arduino by disconnecting my iPod.
P.S. it's not a LM321 but a LM324
Thanks!
Hi I'm a beginer and I want to amplify the music that out of my iPod using an op amp. I used an app on my iPod that generate sin wave to figure out what is the maximum voltage that my iPod can deliver it turn out that it's around 0.25V. I want my LM324 to output 5V when my iPod deliver 0.25V so the gain of the op amp need to be 5V/0.25V=20 for that I used 2 resistor to set the gain of the op amp 1+100K/5.25K=20.0476. The problem is that when my iPod deliver 0.25V the op amp don't output 5V but around 2.25V also when I disconnect my iPod of the op amp the output voltage of the LM324 goes up to it supply voltage I don't want to wreck my arduino by disconnecting my iPod.
P.S. it's not a LM321 but a LM324
Thanks!
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