OK then 3 pairs in OP and DC protection. How abt RFC in series with spk I know the MOSFETs can work into RF regions.
Thanks
Rahul
Thanks
Rahul
Hi Rahul ,
Go for atleast 4 pairs...
RFC should be atleast 10uH edgewound 1.5" Dia 14SWG
For DC protection either use a Traic Crowbar or Relay....
K a n w a r
Go for atleast 4 pairs...
RFC should be atleast 10uH edgewound 1.5" Dia 14SWG
For DC protection either use a Traic Crowbar or Relay....
K a n w a r
hello Diy-ers,
this is my first post to forum.
are you talking here about rms ?? swinging to rails
all the best from Peter
this is my first post to forum.
are you talking here about rms ?? swinging to rails
all the best from Peter
peranders said:
Per,
Did you miss my earlier post?
I qoute:
"But Eva, it may be splitting hairs but in theory you can never get at the rails, there is always some loss, no? There's always some Vds required to operate. I'm talking about the output getting to the supply rails.
The highly marketed rail-to-rail opamps get close, but not exactly there. But again, I don't want to split hairs."
Sufficient?
Jan Didden
engl said:
Hello Peter,
Welcome to this Thread!
I think we are talking about Peak magnitude of output voltage swing to touch the rails that is power supply bus, with minimum possible rail loss....
regards
K a n w a r
Hi!
OK Kanwar then I move ahead :
a) 4 pair OP devices
b) Copper pour on GND line
c) Seprate line for elivated negative rail.
d)Fuses on supply rails
e) DC protection, PCB mount relay based
f) Couple of caps more on PSU on board here there
g) RFC in OP.
Nothing much else I can think of for now.
BTW any suitable preamps for this one??
Regards
Rahul
OK Kanwar then I move ahead :
a) 4 pair OP devices
b) Copper pour on GND line
c) Seprate line for elivated negative rail.
d)Fuses on supply rails
e) DC protection, PCB mount relay based
f) Couple of caps more on PSU on board here there
g) RFC in OP.
Nothing much else I can think of for now.
BTW any suitable preamps for this one??
Regards
Rahul
Hi Rahul ,
Nice points....go Ahead!
Preamp:Use any discrete or opamp based preamp which is capable of delivering atleast 3V RMS at 1K load impedance...with wide frequency response.....
Which software are you going to use for making the PCB layout...?
regards,
K a n w a r
Nice points....go Ahead!
Preamp:Use any discrete or opamp based preamp which is capable of delivering atleast 3V RMS at 1K load impedance...with wide frequency response.....
Which software are you going to use for making the PCB layout...?
regards,
K a n w a r
Hi!
NE5532 seems good for price to performance ratio. Rs15/ each here. Better we keep preamp and input circuitry seprate.
Will be using EasyPC for PCB design. Thats the only one I am quite confortable at. I also have WinQcad but it is slightly more cumbersome.
Regards
Rahul
NE5532 seems good for price to performance ratio. Rs15/ each here. Better we keep preamp and input circuitry seprate.
Will be using EasyPC for PCB design. Thats the only one I am quite confortable at. I also have WinQcad but it is slightly more cumbersome.
Regards
Rahul
Hi Rahul,
NE5532 is good choice, we also use it in our products as well...🙂
Ok draw the layout and we will check it for any changes if required if neccessary...along the course of action...😉
regards,
K a n w a r
NE5532 is good choice, we also use it in our products as well...🙂
Ok draw the layout and we will check it for any changes if required if neccessary...along the course of action...😉
regards,
K a n w a r
janneman said:
Oops...
you're right as always
However when I need 0.5dB louder i go and wash my ears and am happy with clipping 3V below rails..
Kanwar
Good work indeed
best regards to all
Adam
I was observing and my feeling is that your amplifier will be a Champion Kanwar
Congratulations....and post more images as it is very interesting.
Good mood in your thread, this is also nice.
regards,
Carlos
Congratulations....and post more images as it is very interesting.
Good mood in your thread, this is also nice.
regards,
Carlos
Rahul said:
Hello Rahul ( And others... )
I've been reading along on the project, mighty interesting!!
- When the PCB is done, maybe some dudes could be interested in buying some PCB's... - I know i would, for sure... - Could that be possible??
As i unfortunately don't have easy acces to making PCB's myself...!!
Sincerely, Lars / Viborg
Hi, Kanwar,
Where can I see your photograph? I always wonders how audio amp designer looks like.
Where can I see your photograph? I always wonders how audio amp designer looks like.
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