Well, I've built it. The actual SEN is only one tenth of the PCB , the rest are two shunt regulators. I used two separate transformers, and I was having trouble with large amounts of hum, buzz, distorsion, etc., but that was solved after adding of 100R resistors on gates going to the ground (thanks for the tip )
I still have some "buzz" on higher volume levels, but I thing that the problem is with close proximity of transformers, I will rearrange them. It is sounding good so far, the voltage on regulators is 17.5 V, I will experiment with higher voltages, for with these transformers I can go as high as 21 V regulated.
Thanks again for everything
I still have some "buzz" on higher volume levels, but I thing that the problem is with close proximity of transformers, I will rearrange them. It is sounding good so far, the voltage on regulators is 17.5 V, I will experiment with higher voltages, for with these transformers I can go as high as 21 V regulated.
Thanks again for everything
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Ah, once again I forgot to write something.
This is off course only one SEN PCB made for personal use. I do not intend to "manufacture" it or anything like it. It's not even a "real" PCB actualy, I just drilled some more holes in spare space of the shunt PCB and connected the JFETs with wires
This is off course only one SEN PCB made for personal use. I do not intend to "manufacture" it or anything like it. It's not even a "real" PCB actualy, I just drilled some more holes in spare space of the shunt PCB and connected the JFETs with wires
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