Hi all,
Finally, I made some mods on my class A headphone amplifier with OPA134+IRF510...
There are two differences between old and new versions,
First- I use a discrete class a op-amp instead of OPA134,
Second- I use an IC based CCS instead of power resistor.
I havent tested yet. However it worked fine on simulator. Except it seems I will some DC offset problems on ouput.
May you say something about that circuit pls?
Thx.
Finally, I made some mods on my class A headphone amplifier with OPA134+IRF510...
An externally hosted image should be here but it was not working when we last tested it.
There are two differences between old and new versions,
First- I use a discrete class a op-amp instead of OPA134,
Second- I use an IC based CCS instead of power resistor.
I havent tested yet. However it worked fine on simulator. Except it seems I will some DC offset problems on ouput.
May you say something about that circuit pls?
Thx.
Looks OK.
You can consider adding a resistor or ferrite bead at mosfet's gate.
To reduce offset you can manipulate R4/R8 ratio.
You can consider adding a resistor or ferrite bead at mosfet's gate.
To reduce offset you can manipulate R4/R8 ratio.
Now, DC offset and frequency compensation problems seem fixed;
Do you think its ok?
An externally hosted image should be here but it was not working when we last tested it.
Do you think its ok?
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