Hi, all,
I am studying Hood 1969/1996 circuit. I read the articles by JLH (1969/1996/2000), but since I am new to electronics, I can not fully understand the descriptions (and assertions) in these articles.
The first step for me seems to understand the quiescent status of the circuit. But after days of gazing on the circuit, I do not have a clue yet.
The attached is a simplified circuit without feedback caps/etc, and the simulation shows quiescent current/voltage pretty close to what the circuit is expected to be.
The problem for me is that, I have no idea, using paper/pencil, how to estimate the quiescent current/voltage? Actually I do not know where to start, even assuming all Vbe=0.6 and all beta=100 (e.g.), but every points seems depends on other points (in terms of voltage/current).
It will be very helpful if you can give any hints on this, and/or point out the relevant background information I am missing (so I can go to check related chapters in text books).
Thanks a lot,
/bruin
I am studying Hood 1969/1996 circuit. I read the articles by JLH (1969/1996/2000), but since I am new to electronics, I can not fully understand the descriptions (and assertions) in these articles.
The first step for me seems to understand the quiescent status of the circuit. But after days of gazing on the circuit, I do not have a clue yet.
The attached is a simplified circuit without feedback caps/etc, and the simulation shows quiescent current/voltage pretty close to what the circuit is expected to be.
The problem for me is that, I have no idea, using paper/pencil, how to estimate the quiescent current/voltage? Actually I do not know where to start, even assuming all Vbe=0.6 and all beta=100 (e.g.), but every points seems depends on other points (in terms of voltage/current).
It will be very helpful if you can give any hints on this, and/or point out the relevant background information I am missing (so I can go to check related chapters in text books).
Thanks a lot,
/bruin