- Joined
- Nov 28, 2011
- Messages
- 8,393
sabahan, I have attached your new posts to the existing thread that you created on this subject.
Did you learn anything from the reference that Steve linked to in post #16? Your first question on the new thread (post #18) seems to indicate that you didn't.
The schematic in post #20 won't do anything. It looks like you intend to use a current mirror at the bottom, but the bases of the transistors aren't connected to anything else. You need to connect them to the collector of one of the transistors.
Even then, the circuit won't work. You can't use a current source in both the emitter and the collector path. If you do, whichever current source passes the higher current will pull the amplifier transistor's voltages towards it and away from the other current source. At least, it would if the amplifier transistor had any bias on it!
You need to go back to explanations and tutorials, and build an understanding of how transistors work. Then progress to current sources, and current mirrors.
Did you learn anything from the reference that Steve linked to in post #16? Your first question on the new thread (post #18) seems to indicate that you didn't.
The schematic in post #20 won't do anything. It looks like you intend to use a current mirror at the bottom, but the bases of the transistors aren't connected to anything else. You need to connect them to the collector of one of the transistors.
Even then, the circuit won't work. You can't use a current source in both the emitter and the collector path. If you do, whichever current source passes the higher current will pull the amplifier transistor's voltages towards it and away from the other current source. At least, it would if the amplifier transistor had any bias on it!
You need to go back to explanations and tutorials, and build an understanding of how transistors work. Then progress to current sources, and current mirrors.