Hi All,
I'm trying to build a simple class A zero feedback FET amplifier you can see in this thread:
http://www.diyaudio.com/forums/solid-state/209296-dc-offset.html
As you will see, the front end is very like the BOZ design. I am trying to direct couple the thing (except the input), and if you read the original post in the thread you will see I have issues with the DC servo design. What I am wondering is whether I need a servo at all, or whether I could get by with a simple bias arrangement for the input fet, a bit like the BOZ.
Soooo, have any of you who have made the BOZ measured how your output voltage varies over time? Do you think that in a direct coupled version with +/- rails the output DC offset could be kept within 100mV?
Anyway, I would appreciate your thoughts if you have any experience with the BOZ or any similar design.
Thanks,
Greg.
I'm trying to build a simple class A zero feedback FET amplifier you can see in this thread:
http://www.diyaudio.com/forums/solid-state/209296-dc-offset.html
As you will see, the front end is very like the BOZ design. I am trying to direct couple the thing (except the input), and if you read the original post in the thread you will see I have issues with the DC servo design. What I am wondering is whether I need a servo at all, or whether I could get by with a simple bias arrangement for the input fet, a bit like the BOZ.
Soooo, have any of you who have made the BOZ measured how your output voltage varies over time? Do you think that in a direct coupled version with +/- rails the output DC offset could be kept within 100mV?
Anyway, I would appreciate your thoughts if you have any experience with the BOZ or any similar design.
Thanks,
Greg.