Hi! I am triyng to make a voltage follower using LM386 ( i did conected the "Inverting input" to the output "Vout"), but the output doesn't look the same as the input. Even then input has 0V the output is about 500mV.

I would like to mention that "+INPUT" and "-INPUT" doesn't have the same potential.

Thanks for reading.

 

Hello,

The LM386 is a power amplifier.
You can not use it in the same way as an opamp.
Why do you want to use the LM386 as voltage follower?
There are some power opamps available if you need the higher output current.

Bertus

 

Hello,

The LM386 is a power amplifier.
You can not use it in the same way as an opamp.
Why do you want to use the LM386 as voltage follower?
There are some power opamps available if you need the higher output current.

Bertus

I tried to use LM386 because i had this one, but i will look for another one.

Thanks a lot.

 

What is the signal you are trying to buffer (voltage, frequency)?
What is the load or downstream circuit you are driving?

ak

 

What is the signal you are trying to buffer (voltage, frequency)?
What is the load or downstream circuit you are driving?

ak

I am using a AD7390 ( DAC converter) to drive an MOS gate, but AD7390's output current is too low (1mA). SO i am trying to boost my DAC output current capabilities with an voltage follower.

 

SO what is the output current you need?

ak

 

SO what is the output current you need?

ak

I think 10 mA should be enough for me. Perhaps even slightly lower.

 

I think 10 mA should be enough for me. Perhaps even slightly lower.

Most/all generic opamps will provide around 20mA.

Post a schematic so we don't have to guess or play 20 questions.