UCD Based Fully Differential Full Bridge 450W RMS Amp - Page 9

JohnW · 6th October 2004, 11:03 AM

Hi Chris,

Well I was kind of being a little smug

however there will still be a slight difference in voltages between the Upper and Lower Driver rails as the upper driver has a second supply source via the resister / zener combination (for correct operation at power up – remember a startup delay is required). However above 8V to 9V Vgs Gate drive there’s little variance in RdsOn value – so I wouldn’t worry too much.

John

Workhorse · 1st December 2009, 12:25 PM

Hey Chris,

where did you went, i think moderators went jiffy on ya

Workhorse · 2nd September 2011, 03:30 PM

Dark Silence

stewin · 28th September 2011, 10:34 PM

hey class d 4 sure why the silence or did you give up on discreet class d ?????

Workhorse · 29th September 2011, 06:26 PM

He is no more, May his soul RIP

stewin · 30th September 2011, 12:17 AM

oops! may GOD bless him and bless his family on his behalf for the knowledge he shared and all his efforts.

BTW is there another post or forum discusing a discreet fullbridge ucd maybe with protection ???

theAnonymous1 · 30th September 2011, 09:30 AM

Workhorse sure does love to stir the pot; even when the contents of the pot are old and moldy.

Classd4sure (AKA Chris) left this forum full of inept brainless creatures for a place where his kind can compliment each others superior skills without the risk of one of us feeble minded scum gleaning some useful insight from their god given talents.

And no, he's not dead (in the literal sense at least).

AP2 · 30th September 2011, 10:35 AM

To Classd4sure:
I see your diagram and I understand that the simulator can help.
but if you let my opinion, the driver section will not allow you to achieve excellent performance. Certainly, the type is already used but with decent performances, not excellent.
When you make the prototype and try to switch it on, then you will understand.
Simulator can help in a strategy theoretical especially on new, not in real performances just on amplifier D class.

Regards

Workhorse · 30th September 2011, 11:17 AM

Quote:

Originally Posted by theAnonymous1

Workhorse sure does love to stir the pot; even when the contents of the pot are old and moldy.

Bad Manners Anony baby, one should respect dead persons.

theAnonymous1 · 30th September 2011, 01:55 PM

Quote:

Originally Posted by Workhorse

Bad Manners Anony baby, one should respect dead persons.

One should respect dead threads.

6th October 2004, 11:03 AM	#81
JohnW diyAudio Member Join Date: Jan 2004 Location: Discovery Bay, Prague, Paris...	Hi Chris, Well I was kind of being a little smug however there will still be a slight difference in voltages between the Upper and Lower Driver rails as the upper driver has a second supply source via the resister / zener combination (for correct operation at power up – remember a startup delay is required). However above 8V to 9V Vgs Gate drive there’s little variance in RdsOn value – so I wouldn’t worry too much. John __________________ Life shouldn’t be take it too seriously, you will not come out alive anyway…

1st December 2009, 12:25 PM	#82
Workhorse diyAudio Member Join Date: Dec 2004	Hey Chris, where did you went, i think moderators went jiffy on ya __________________ It's a fruitless endeavor to try and educate a fool that rejoices in ignorance

2nd September 2011, 03:30 PM	#83
Workhorse diyAudio Member Join Date: Dec 2004	Dark Silence __________________ It's a fruitless endeavor to try and educate a fool that rejoices in ignorance

29th September 2011, 06:26 PM	#85
Workhorse diyAudio Member Join Date: Dec 2004	He is no more, May his soul RIP __________________ It's a fruitless endeavor to try and educate a fool that rejoices in ignorance

30th September 2011, 09:30 AM	#87
theAnonymous1 diyAudio Member Join Date: Feb 2004 Location: Anonymityville	Workhorse sure does love to stir the pot; even when the contents of the pot are old and moldy. Classd4sure (AKA Chris) left this forum full of inept brainless creatures for a place where his kind can compliment each others superior skills without the risk of one of us feeble minded scum gleaning some useful insight from their god given talents. And no, he's not dead (in the literal sense at least). __________________ "If you don't like funerals don't kick sand in Ninja's face." - Ninja


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28th September 2011, 10:34 PM	#84
stewin diyAudio Member Join Date: Jul 2007	hey class d 4 sure why the silence or did you give up on discreet class d ?????

30th September 2011, 12:17 AM	#86
stewin diyAudio Member Join Date: Jul 2007	oops! may GOD bless him and bless his family on his behalf for the knowledge he shared and all his efforts. BTW is there another post or forum discusing a discreet fullbridge ucd maybe with protection ???

30th September 2011, 10:35 AM	#88
AP2 diyAudio Member Join Date: Dec 2009 Location: Italy	To Classd4sure: I see your diagram and I understand that the simulator can help. but if you let my opinion, the driver section will not allow you to achieve excellent performance. Certainly, the type is already used but with decent performances, not excellent. When you make the prototype and try to switch it on, then you will understand. Simulator can help in a strategy theoretical especially on new, not in real performances just on amplifier D class. Regards

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