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Old 20th October 2013, 03:07 AM   #141
Bonsai is offline Bonsai  Taiwan
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Very nice dadod!
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Old 20th October 2013, 05:45 AM   #142
dadod is offline dadod  Croatia
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Very nice dadod!
Thank you Bonsai, you are to kind.
Here is the clipping and FFT at 1kHz and 1W output.
BR Damir
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Old 20th October 2013, 06:10 AM   #143
RNMarsh is online now RNMarsh  United States
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Originally Posted by dadod View Post
Thank you Bonsai, you are to kind.
Here is the clipping and FFT at 1kHz and 1W output.
BR Damir


Getting there.

Thx-RNMarsh
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Old 20th October 2013, 06:52 AM   #144
dadod is offline dadod  Croatia
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PSRR!
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Old 20th October 2013, 09:54 AM   #145
AndrewT is online now AndrewT  Scotland
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PSRR!
which?
Or are +ve and -ve the same?

Is "good" at the top of the plot?
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Old 20th October 2013, 11:40 AM   #146
dadod is offline dadod  Croatia
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which?
Or are +ve and -ve the same?

Is "good" at the top of the plot?
PSRR of +ve, and -ve is even better.
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Old 20th October 2013, 05:35 PM   #147
RNMarsh is online now RNMarsh  United States
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The ear, as we all know, is most sensitive in the freq range of approx 3-5KHz. So for listening, that is the range you need max PSRR as a minimum range. [ignoring hum/ps ripple/ cm noise issues]. #144 would be OK at 100dB or more. What comes into play that reduces the PSRR below 1Khz? Would a simple, well placed R increase it at lower freqs?


Thx-RNMarsh

Last edited by RNMarsh; 20th October 2013 at 05:39 PM.
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Old 20th October 2013, 08:29 PM   #148
dadod is offline dadod  Croatia
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Originally Posted by RNMarsh View Post
The ear, as we all know, is most sensitive in the freq range of approx 3-5KHz. So for listening, that is the range you need max PSRR as a minimum range. [ignoring hum/ps ripple/ cm noise issues]. #144 would be OK at 100dB or more. What comes into play that reduces the PSRR below 1Khz? Would a simple, well placed R increase it at lower freqs?


Thx-RNMarsh
This is if I replace 10 ohm resistors in power filter for the front end with simple cap multipliers.
BR Damir
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Old 20th October 2013, 09:40 PM   #149
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Dadod, start to bild the damn thing, spice is never ending story...
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Old 20th October 2013, 11:12 PM   #150
Krisfr is offline Krisfr  United States
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Quote:
Originally Posted by dadod View Post
This is if I replace 10 ohm resistors in power filter for the front end with simple cap multipliers.
BR Damir
Finding Cap Multipliers that will handle a voltage above 50 volts is the problem. I have not seen one on the forum. Has anyone else seen one? Keantoken said he was going to do one, but I have yet to see it.
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