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diyAB Amp  The "Honey Badger" build thread
diyAB Amp  The "Honey Badger" build thread
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Old 18th October 2018, 09:20 PM   #3171
helitim is offline helitim  Canada
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There is discussion a while ago about it. If you search the thread for "baker clamp" you will find some information. See below for an idea.

Quote:
Originally Posted by AndrewT View Post
The diode is just a tweak to reduce the sound effect when coming out of clipping.

The reliability of the amplifier is not affected by the presence, or not, of the diode.

See Baker Clamp which is a form of softer clipping.
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Old 20th October 2018, 01:11 AM   #3172
andrensairr is offline andrensairr  Australia
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Originally Posted by stuartmp View Post
Hi John, Sorry to be a pain but it looks like to simulate your amp I still need another include file -> "DIYAamp.txt"


If you could post this when you have time that would be great.

It's quite possible this is just the same file that was included with the original SPICE file, attached somewhere in this thread. I can't say whether John modified it or not.
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Old 21st October 2018, 10:24 AM   #3173
neno70 is offline neno70
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hi, I'm preparing the PSU x my Honey Badger, I bought 2 pcb Universal PSU V3.0, assembling them with MUR3220WT diodes, condensers 15000 uf but, demand; the resistenye from 0.47 3w, I have to put them ??? thank you
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Old 22nd October 2018, 04:26 PM   #3174
mbrennwa is offline mbrennwa  Switzerland
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That PCB is a CRC design, right? I would just replace the R by a jumper.
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Old 22nd October 2018, 05:49 PM   #3175
neno70 is offline neno70
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Quote:
Originally Posted by mbrennwa View Post
That PCB is a CRC design, right? I would just replace the R by a jumper.
hi, yes the pcb is x CRC. in the case of AB the CRC filter is not needed?
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Old 22nd October 2018, 06:41 PM   #3176
nfsgame is offline nfsgame
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In case of use in Class AB it's possible that the music signal could be modulated into the resistors. This could case bad behaviour.
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Old 22nd October 2018, 07:11 PM   #3177
mbrennwa is offline mbrennwa  Switzerland
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Quote:
Originally Posted by neno70 View Post
hi, yes the pcb is x CRC. in the case of AB the CRC filter is not needed?
I guess the diyAudio CRC setup was conceived for use with class A amps, which draw a relatively constant current. CRC does a good job at filtering PSU ripple with constant current.

With class AB amps, the current drawn from the PSU goes with the music signal. Any variation of the current through the resistor would cause a corresponding voltage variation across the resistor, and hence at the PSU output. That's not what you want, and you are better off to just replace the resistor by a piece of wire. By doing that you end up with the conventional "capacitor only PSU".
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Old 22nd October 2018, 11:20 PM   #3178
neno70 is offline neno70
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Quote:
Originally Posted by mbrennwa View Post
I guess the diyAudio CRC setup was conceived for use with class A amps, which draw a relatively constant current. CRC does a good job at filtering PSU ripple with constant current.

With class AB amps, the current drawn from the PSU goes with the music signal. Any variation of the current through the resistor would cause a corresponding voltage variation across the resistor, and hence at the PSU output. That's not what you want, and you are better off to just replace the resistor by a piece of wire. By doing that you end up with the conventional "capacitor only PSU".
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Old 26th October 2018, 04:50 PM   #3179
HIFI0101 is online now HIFI0101  Bangladesh
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Guys where is the pdfs to print the pcbs?
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Old 26th October 2018, 05:18 PM   #3180
jwilhelm is offline jwilhelm  Canada
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Originally Posted by HIFI0101 View Post
Guys where is the pdfs to print the pcbs?
diyAB Amp - The "Honey Badger"
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