Mosfet Amp help

redhorseaudio · 25th November 2008, 10:56 AM

Hi All,

Can anyone help me to use this N-Ch-Mosamp schematic in car amp, I dont know does it work ? Or any modification in the schematic than suggest.

Regards

The Saint · 25th November 2008, 11:06 AM

Hi

Where is the schematic?

redhorseaudio · 25th November 2008, 11:13 AM

HI Anthony

Any help ?

The Saint · 25th November 2008, 11:44 AM

Hi Again

Your schematic looks like a Class-D amplifier if I am not mistaken.
The only thing you really need is a suitable Switchmode power supply
www.coldamp.com have suitable power supplies on their site.

However this amp of yours requires 3 supplies.
Try linking the 79 volt supply via a power diode to the 100 v rail and run the whole lot from a +-80 volt rail.
This only leaves the +15 volt logic supply to worry about.
As I mentioned above one of coldamps SMPSs would do the trick.

redhorseaudio · 29th November 2008, 06:52 AM

Hi Anthony

Thanx for reply but SMPS is not worry if amps schematics is properly working

redhorseaudio · 6th December 2008, 10:26 AM

HI,

Change the think of amp and finely this design is ok its my thouth because this tested by my friend and now i will design pcb for it please send you all veluable suggetions

Best Regards

25th November 2008, 11:13 AM	#3
redhorseaudio diyAudio Member Join Date: Sep 2004	HI Anthony Any help ? __________________ ssmir

29th November 2008, 06:52 AM	#5
redhorseaudio diyAudio Member Join Date: Sep 2004	Hi Anthony Thanx for reply but SMPS is not worry if amps schematics is properly working __________________ ssmir

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25th November 2008, 11:06 AM	#2
The Saint diyAudio Member Join Date: Jul 2002 Location: Launceston, TAS, Australia	Hi Where is the schematic?

25th November 2008, 11:44 AM	#4
The Saint diyAudio Member Join Date: Jul 2002 Location: Launceston, TAS, Australia	Hi Again Your schematic looks like a Class-D amplifier if I am not mistaken. The only thing you really need is a suitable Switchmode power supply www.coldamp.com have suitable power supplies on their site. However this amp of yours requires 3 supplies. Try linking the 79 volt supply via a power diode to the 100 v rail and run the whole lot from a +-80 volt rail. This only leaves the +15 volt logic supply to worry about. As I mentioned above one of coldamps SMPSs would do the trick.

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