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200W MOSFET CFA amp
200W MOSFET CFA amp
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Old 11th February 2019, 04:50 PM   #1361
dadod is offline dadod  Croatia
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Here is the list of different boards order. Check for error please.

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

balance in board order list:

Arthur- balance inputs board 4pcs ... ... .OK
Vitalica - balance inputs board 4pcs .... OK
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Old Yesterday, 04:23 PM   #1362
malibutwins is offline malibutwins  United States
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I can't find the bom for main board
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Old Yesterday, 04:43 PM   #1363
dadod is offline dadod  Croatia
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Quote:
Originally Posted by malibutwins View Post
I can't find the bom for main board
There is index list in first post, look for index no. 7.

The boards are ordered and waiting for delivery.
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Old Yesterday, 05:06 PM   #1364
NMOS is offline NMOS  Germany
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Quote:
Originally Posted by dadod View Post
It monitors the DC voltage on the output( you have to connect LR, LL or only one of it to the power amp output). In case there is DC voltage higher then 10 V it will switch the PS regulator off.
I had ones bad solder in my power amp and full DC voltage on the output, PS switched off and nothing happened to the loudspeaker. It is important not to have to big caps in thousands uF after PS regulator

Im coming from PA business. and safety is important thing

we build and sell Mosfet amplifier similar like CFA about 10 years ago

I recommended Triac crowbar between Speaker out and Ground to save
100 % Speaker look my another Posting

Normally amp can protect with a few components + LM 311 + NE55 Timer

ps regulator to much compments, 2 Mosfets have heat dissipation

PS Regulator will work, but its not 100 % safe if device fail


2000 W Class D amplifier can be safe protct with a few cheap components + LM 311 + NE55 Timer

Last edited by NMOS; Yesterday at 05:08 PM.
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Old Today, 05:39 PM   #1365
dadod is offline dadod  Croatia
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Here is the list of different boards order. Check for error please.

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
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Old Today, 07:00 PM   #1366
ostripper is online now ostripper  United States
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Quote:
Originally Posted by dadod View Post
Some photos, the amp with balance inputs.
By the way, post Chinese New Year did not start production of the amp board yet.
Inspiration .... Very ,VERY !! good work.


I like how you have that small IPS attached to the main OPS.
Exactly how I will do greenamp , but SMD and smaller.




OS
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Old Today, 08:44 PM   #1367
dadod is offline dadod  Croatia
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Quote:
Originally Posted by ostripper View Post
Inspiration .... Very ,VERY !! good work.


I like how you have that small IPS attached to the main OPS.
Exactly how I will do greenamp , but SMD and smaller.




OS
Thank you OS, you are very kind.
Damir
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Old Today, 08:54 PM   #1368
ostripper is online now ostripper  United States
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Quote:
Originally Posted by dadod View Post
Thank you OS, you are very kind.
Damir

I mean it . You , Apex , Vzaudio , a few others are the only ones with
quality designs.
Also , not held back by "audio voodoo" Real progress , not snake oil.
Most of the forum is chasing subjective BS. Vendors fill $$$ their pockets
selling snake oil.

We do not get appreciated for quality.
Members would chase dubious low quality marketed designs. Or if you
make up a fancy name "Honey Badger", Slewmaster , this will get it built.
You should name your amp. call it the "Infidel" or something.


It seems the engineering is overlooked , in favor of the "cover" (name) or
what famous fool designed it.


OS
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