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200W MOSFET CFA amp
200W MOSFET CFA amp
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Old 9th March 2019, 02:16 PM   #1401
malibutwins is online now malibutwins  United States
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Sweet!
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Old 9th March 2019, 02:17 PM   #1402
malibutwins is online now malibutwins  United States
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Bom or instructions?
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Old 9th March 2019, 03:05 PM   #1403
dadod is offline dadod  Croatia
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Quote:
Originally Posted by malibutwins View Post
Bom or instructions?
In the first post there is index list and no. 7 is for 200W CFA with or without balanced board.
There some small differences, there is no screen error any more on the new 200W amp board and one more resistor on balanced board. I will prepare the list of that small differences soon before the PS boards arrive, expected next week.
Damir
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Old 10th March 2019, 08:42 AM   #1404
zsaudio is offline zsaudio  Europe
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Hi Dadod,
Nice to see the boards.
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Old 11th March 2019, 04:33 PM   #1405
dadod is offline dadod  Croatia
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All boards will be here this week and I will send PayPal money request. All from the list, please PM your PayPal email address.
200W amp board order list
..confirmed
tjencks 6 pcs 200W amp boards.....OK
vitalica 2 pcs 200W amp boards ..OK
malibutwins 2 pcs 200W amp boards.....OK
arthur 4pcs 200W amp boards....OK
zsaudio 2pcs 200W amp boards......OK

PS regulator board order list:

Arthur PS regulator board 4pcs....OK
zsaudio PS regulator board 2pcs.....OK
mlloyd1 PS regulator board 2pcs.....OK
Vitalica - PSU PCB 2 pcs ....OK
tjencks- PSU regulator board 6pcs....OK
Lbud4- PSU regulator board 2pcs......OK
malibutwins-PS regulator board 2pcs....OK

balance in board order list:

Arthur- balance inputs board 4pcs ... ... .OK
Vitalica - balance inputs board 4pcs .... OK

-----------------------------------------------------------------
Short recapitulation about 200W CFA balanced ready board.

1. It's possible to use it in pure CFA mode (unbalanced input), and in this case small FB board is used with 8 1k1 2W 1% resistor on it. They are connected four parallel in series with other four in parallel.

2. If small balanced add board is used the amp act as VFA with balanced inputs. From 200W CFA VMOSFET BOM is clear what components not needed to be soldered on the main amp board

3. PS regulator needs +-70V input to get +-65V output.

If I missed something please don't hesitate to ask.
Attached Images
File Type: jpg 200W CFA 1.3.2-sch.jpg (401.6 KB, 304 views)
File Type: jpg 200W CFA 1.3.2b photo.jpg (473.5 KB, 310 views)
File Type: jpg balanced in add-sch 1.2.jpg (157.2 KB, 321 views)
File Type: jpg balanced in board.jpg (201.1 KB, 313 views)
File Type: jpg FB board.jpg (275.9 KB, 289 views)
File Type: jpg PS regulator-mosfet-duallayer-sch1.2.jpg (313.0 KB, 114 views)
File Type: jpg PS regulator board 1.jpg (339.0 KB, 110 views)
File Type: jpg PS regulator oard 2.jpg (390.9 KB, 106 views)
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Old 11th March 2019, 04:36 PM   #1406
dadod is offline dadod  Croatia
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200W CFA and PS regulator BOMs.
Attached Files
File Type: txt 200W-CFA-VMOSFET-BOM-1.3.2-balanced ready.txt (3.1 KB, 24 views)
File Type: txt balanced in add BOM 1.2.txt (748 Bytes, 12 views)
File Type: txt BOM-PSregulator-mosfet+-65V-1_2.txt (1.7 KB, 25 views)
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Old 13th March 2019, 10:22 AM   #1407
dadod is offline dadod  Croatia
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To Lbud4
Please send your PayPal email address and I will send you PayPal money request.
I tried to send PM but your mail is full.
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Old 15th March 2019, 11:06 AM   #1408
dadod is offline dadod  Croatia
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Now I have all boards here, but I am missing the PayPal email address from:
tjencks
mlloyd1

please send PM with PayPal address and I'll send the money request.
Damir
Attached Images
File Type: jpg sve plocice.jpg (969.2 KB, 70 views)
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Old 15th March 2019, 03:38 PM   #1409
mlloyd1 is offline mlloyd1  United States
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200W MOSFET CFA amp
Damir:

PM sent.
sorry for the delay!

mlloyd1

Quote:
Originally Posted by dadod View Post
Now I have all boards here, but I am missing the PayPal email address from:
tjencks
mlloyd1

please send PM with PayPal address and I'll send the money request.
Damir
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Old 16th March 2019, 10:44 AM   #1410
dadod is offline dadod  Croatia
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I will send the paid boards starting with next Monday.
For those who wants the boards to be sent to different address than the one from PayPal please send me PM.
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