1983Views6Replies

Author Options:

Headphone amplifier using LM324, is it possible? Answered

I have been scouring the web looking for a possible circuit for this chip. just one input and one output. i cant find anything, is it possible??

Comments

The forums are retiring in 2021 and are now closed for new topics and comments.
0
Josehf Murchison
Josehf Murchison

7 years ago

Its a quad opamp but yes you only need to use one.

0
MCW1989
MCW1989

Answer 7 years ago

I have had a look at the data sheet earlier, I can't seem to find a suitable set up, they just don't look right. It might just be me what would you recommend :)

0
Josehf Murchison
Josehf Murchison

Answer 7 years ago

What gain do you need?

I would go with a non inverting op amp.

Make sure the input power of the headphones is not greater than the op amp output.

Take the output power of your device and the max input power headphones and compare the two.

If the output is one how many ones fit in the headphones input and that is your maximum gain.

Joe

0
MCW1989
MCW1989

Answer 7 years ago

i'm looking for a gain of around 5?

0
Josehf Murchison
Josehf Murchison

Answer 7 years ago

OK

The supply voltage should be 6 times the device output and no greater than 30 volts on a single supply or 15 volts on a double supply.

The output voltage of your device should be no more than 2 or 4 volts peak to peak.

Joe