Power supplies are important -- what do you propose to use? Batteries? May not be practical
The request is a floating supply. Perhaps batteries, I don't care for the Moment!
First finish the Filters then think about supplies: 5V USB, 5V digital, 18V x2 Floatings and +/-18V analog.
Jean-Paul
First finish the Filters then think about supplies: 5V USB, 5V digital, 18V x2 Floatings and +/-18V analog.
Jean-Paul
here the different schematics:
- 8-bit tap (8x 15k),
- discrete I/V-converter (500R; +2.5V bias --> thanks Patrick),
- and the two Sallen-Key filter (94kHz and 166kHz).
Do I forget something, I mean principally, coupling capacitors? Open for sinnfull modifications...
Jean-Paul
- 8-bit tap (8x 15k),
- discrete I/V-converter (500R; +2.5V bias --> thanks Patrick),
- and the two Sallen-Key filter (94kHz and 166kHz).
Do I forget something, I mean principally, coupling capacitors? Open for sinnfull modifications...
Jean-Paul
Coming along really well. I wonder if it is possible to reduce the value of the electrolytic cap 220uF in the I-V such that it could be replaced?
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
I very much like the approach. For the Sallen Key filters, I am inclined to go with a B1 buffer as the basis -- not too different from what you have, really very close. I am suggesting this because this already exists, essentially but with diifferent values, as the B-4 active crossover.
Now interestingly, both of these can readily be made balanced as the SEN, so from the point of view of what DSC2 might look like, and assuming we use this approach for the discrete IV and filters, what would the digital input look like? ... would it be as simple as placing an inverter on the DSD input line?
Hello,
I reiterate my question about coupling between the different stages to know if I can go completly DC and only place a coupling cap at the output of the last Sallen-Key filter?
I´ve asking Patrick (EUVL) for helping to built a last version of his simplistic OPAMP to use as output buffer.
JLSOUNDS give me 3D datas for the I2SOVERUSB converter: I´m working on some missing components but the results are today quiet good, please see the attachment...
Jean-Paul
I reiterate my question about coupling between the different stages to know if I can go completly DC and only place a coupling cap at the output of the last Sallen-Key filter?
I´ve asking Patrick (EUVL) for helping to built a last version of his simplistic OPAMP to use as output buffer.
JLSOUNDS give me 3D datas for the I2SOVERUSB converter: I´m working on some missing components but the results are today quiet good, please see the attachment...
Jean-Paul
Attachments
ARM/FPGA SFP optical input, I2S output NAA
I've been looking at SFP input and I2S output with networkaudiod running on a low powered CPU. sm31 pointed this out: Optical Network Configurations - Page 16
This product will use the Xilinx 7010/7020: krtkl
So a driver would need to be written/modified to get I2S output on the pins ... doable?
I am thinking this would be a terrific platform to create a direct Ethernet input for the "DSC2".
I've been looking at SFP input and I2S output with networkaudiod running on a low powered CPU. sm31 pointed this out: Optical Network Configurations - Page 16
This product will use the Xilinx 7010/7020: krtkl
So a driver would need to be written/modified to get I2S output on the pins ... doable?
I am thinking this would be a terrific platform to create a direct Ethernet input for the "DSC2".
Inverter for Balanced?
Does anyone know? Would placing an inverter on the DSDR and DSDL lines provide the input to a balanced DSC1?
Does anyone know? Would placing an inverter on the DSDR and DSDL lines provide the input to a balanced DSC1?
Balanced DSC
So balanced DSC is as easy as:
View attachment DSC1b.pdf
And then dual I-V Sen and filters.
So balanced DSC is as easy as:
View attachment DSC1b.pdf
And then dual I-V Sen and filters.
Not just transformer🙂 I'm thinking relays to switch between discrete SK filter eg B1 buffer based vs. M2 "enhanced" transformer -- the M2 sounds so good in real life that it might be a good option, but it would be good to be able to test side by side
Sent from my iPhone using Tapatalk
Sent from my iPhone using Tapatalk
Balanced DSC
Schematic for a Balanced DSC shift register and resistor ladder module:
and board:
Schematic for a Balanced DSC shift register and resistor ladder module:
and board:
