Good Alex mm .... i am glad you have found something and have fixed.
Here is a video about you:
Alexandru is the great...but this pcboard is mine - YouTube
Images attached...about my board.... Dx Home board.
regards,
Carlos
Here is a video about you:
Alexandru is the great...but this pcboard is mine - YouTube
Images attached...about my board.... Dx Home board.
regards,
Carlos
Attachments
.......I'm great but only in kg 109 😱 ,another small error TIP 41 will be change with BD139 for correct function in my previous PCB 😉 .(base inverted with emiter) not big deal .
Now, the real and correct PCB for amplifier in attachment 🙂 . Zobel filter included on PCB 🙂 . Carlos you are faster then me, and your amplifier will play music soon .Thanks for video . I have to wait until next weak .......🙁
regards
Alex.
Now, the real and correct PCB for amplifier in attachment 🙂 . Zobel filter included on PCB 🙂 . Carlos you are faster then me, and your amplifier will play music soon .Thanks for video . I have to wait until next weak .......🙁
regards
Alex.
Attachments
Already made.... assembled or ensanblado the way Juan say
I am still searching for insulating material to install the board into a heatsink.
regards,
Carlos
I am still searching for insulating material to install the board into a heatsink.
regards,
Carlos
damn small amp.. i`ll not miss this one to build 😀. hehehehehe. So its necessary to put zobel network?
I am glad you like it Norazmi...when listening you will like it even more!
here you have a video about the zobel:
We have zobel, a wrong one but we have it - YouTube
regards,
Carlos
here you have a video about the zobel:
We have zobel, a wrong one but we have it - YouTube
regards,
Carlos
Attachments
Herman made pcboard..... he is studying and soon we gonna have final results
He use to make while we go talking and discussing details.... we have the same language and this makes communication easier.
Not final work...he is doing....on the go for a while.
regards,
Carlos
He use to make while we go talking and discussing details.... we have the same language and this makes communication easier.
Not final work...he is doing....on the go for a while.
regards,
Carlos
Herman pcboard is not ready to go...we are studying the stuff together
Not ready....wait a little bit if you want to use Herman board..not tested too....... have a lot of jumpers and the capacitors are bigger than board (electrolitic).... this gonna be fixed..we are discussing these details.
Alex mm board was not tested also.
The only one that is being tested (for a while) is mine one.
Do yours if you want... and post it here too.
regards,
Carlos
Not ready....wait a little bit if you want to use Herman board..not tested too....... have a lot of jumpers and the capacitors are bigger than board (electrolitic).... this gonna be fixed..we are discussing these details.
Alex mm board was not tested also.
The only one that is being tested (for a while) is mine one.
Do yours if you want... and post it here too.
regards,
Carlos
Attachments
All the resistors, except the three that cross tracks, could be dual purpose SMD or through hole (TH).
Just add the smd pads. Then the builder can choose to use TH or SMD.
For those three exceptions, the smd pads could be added and a jumper across the track would do.
Just add the smd pads. Then the builder can choose to use TH or SMD.
For those three exceptions, the smd pads could be added and a jumper across the track would do.
These batteries may end very fast.... i have not tested it yet
May not be approved.
I have tested the small board and worked fine:
DxDc small home board test passed - YouTube
regards,
Carlos
May not be approved.
I have tested the small board and worked fine:
DxDc small home board test passed - YouTube
regards,
Carlos
Amplifiers that lack emitter resistors are generally smoke generators too.
It might work OK with bias set to class B, the internal bias resistors will allow for the feedback loop to be completed. I would probably start out with about 2V bias between the pair of outputs (about one diode-drop less than class AB), and see how it goes from there.
It might work OK with bias set to class B, the internal bias resistors will allow for the feedback loop to be completed. I would probably start out with about 2V bias between the pair of outputs (about one diode-drop less than class AB), and see how it goes from there.
This one has emitter resistors.... 0.47 ohms.
It also uses Zobel filter and output inductor, as also Miller capacitor and RF input filter too.
You said would set to 2 volts the bias... then do it and tell me your own results...you are invited to check your thoughs and share them to our community.
I have give up to make too much thoughs...i do real life tests..they answer my doubts in a very perfect way... real world tests say to me.
- "go!".... or "not go!"
I love these words together.... "go from there".... this is the base of try and error...i love that as all i have learned was a result of that.
regards,
Carlos
It also uses Zobel filter and output inductor, as also Miller capacitor and RF input filter too.
You said would set to 2 volts the bias... then do it and tell me your own results...you are invited to check your thoughs and share them to our community.
I have give up to make too much thoughs...i do real life tests..they answer my doubts in a very perfect way... real world tests say to me.
- "go!".... or "not go!"
I love these words together.... "go from there".... this is the base of try and error...i love that as all i have learned was a result of that.
regards,
Carlos
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