Hi crew!
So I breadboarded last night this Class B - Push Pull amplifier. I've tested it on a 3 way 8 ohms speaker cabinet and I'm very happy with the sound. Especially considering the general opinion about the sound quality of the TL08x
The circuit comes from this page: http://www.allaboutcircuits.com/vol_6/chpt_6/10.html.
Like the first project I mentioned here I decided to build it because I love the way the author explains a lot about it's inner workings, and everything is justified and minimal. It's the Bauhaus of electronics!
I want to go to the next step by building the other channel (using the 2 op amps left in my TL084) and eventually build it into a nice old school wooden cabinet. But before I do it I would love to get your feedback (is this a pun?).
Talking about feedback, I would like to stay in closed loop mode in this discussion if that's OK Let me explain: I would love to avoid getting into design oscillation and add components until my brain saturates (going from pun to sustained metaphore). I one word I want to keep it simple. Not like this last paragraph.
So please let me know what you think could be done better. Are the components stressed in any way by a poor design? What is the power of this amp and how can I calculate it? How do I know if I can drive 4 or 8 ohms with this?
Attached is my version of the circuit. All I've done is add a 1K resistor (R2) in series with the pot (R3). I did this to avoid going in open loop on the TL084 2/2 (when to pot approaches full resistance) and clipping like crazy.
Edit: I am very bad at circuit analysis because I am a self taught beginner. It would be great to hear not only feedback but the reasons / calculations behind your feeback!
So I breadboarded last night this Class B - Push Pull amplifier. I've tested it on a 3 way 8 ohms speaker cabinet and I'm very happy with the sound. Especially considering the general opinion about the sound quality of the TL08x
The circuit comes from this page: http://www.allaboutcircuits.com/vol_6/chpt_6/10.html.
Like the first project I mentioned here I decided to build it because I love the way the author explains a lot about it's inner workings, and everything is justified and minimal. It's the Bauhaus of electronics!
I want to go to the next step by building the other channel (using the 2 op amps left in my TL084) and eventually build it into a nice old school wooden cabinet. But before I do it I would love to get your feedback (is this a pun?).
Talking about feedback, I would like to stay in closed loop mode in this discussion if that's OK Let me explain: I would love to avoid getting into design oscillation and add components until my brain saturates (going from pun to sustained metaphore). I one word I want to keep it simple. Not like this last paragraph.
So please let me know what you think could be done better. Are the components stressed in any way by a poor design? What is the power of this amp and how can I calculate it? How do I know if I can drive 4 or 8 ohms with this?
Attached is my version of the circuit. All I've done is add a 1K resistor (R2) in series with the pot (R3). I did this to avoid going in open loop on the TL084 2/2 (when to pot approaches full resistance) and clipping like crazy.
Edit: I am very bad at circuit analysis because I am a self taught beginner. It would be great to hear not only feedback but the reasons / calculations behind your feeback!
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