You could use just resistors, but you will end up with a circuit with likely higher than desired impedance on the output. The advantage of the op-amp is very low output impedance, therefore you can use it to drive a variety of things. In this case, going to an Arduino shouldn't be too big of deal because Arduino analog input pins have very high impedance. But if you wanted to drive a motor or speaker or something that needs some current, using a voltage divider and only resistors to make a summing circuit is not going to work well. The only cons of using the op-amp is more complexity (space) and cost.
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Is voltage divider dc offset simple andbetter or by using a op-amp ?
What are the pros and cons??
You could use just resistors, but you will end up with a circuit with likely higher than desired impedance on the output. The advantage of the op-amp is very low output impedance, therefore you can use it to drive a variety of things. In this case, going to an Arduino shouldn't be too big of deal because Arduino analog input pins have very high impedance. But if you wanted to drive a motor or speaker or something that needs some current, using a voltage divider and only resistors to make a summing circuit is not going to work well. The only cons of using the op-amp is more complexity (space) and cost.
Hey, that's pretty cool! Do you happen to have the code to acquire the signal please? Thank you!
Which opamp was using in this circuit? Thanks
just a generic OP07CP op amp
THAT WAS SO HELPFULL THANKS
Thanks, great video
Thank you
Consider becoming a Muslim if you're not :)
When I see people who are helpful I remember the Prophet Muhammed peace be upon Him saying: "The best of people are those who are most beneficial to people."