60w Mosfet

I

Iván Francisco

Member

Joined 2006

2007-05-14 9:15 pm

#1

• 2007-05-14 9:15 pm

• #1

Hi,
need opinions about this circuit a 60W MosFet Audio Amplifier

http://www.redcircuits.com/Page100.htm

Thanks in advance

 

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A

AndrewT

R.I.P.

Joined 2004

2007-05-14 10:27 pm

#2

• 2007-05-14 10:27 pm

• #2

In the original circuit, a three-diode string was wired in series to R10. Two of these diodes are now replaced by a red LED in order to achieve improved quiescent current stability over a larger temperature range. Thanks to David Edwards of LedeAudio for this suggestion.

Click to expand...

I would be very wary of this change to the bias temperature compensation.

 

D

davidallancole

Member

Joined 2005

2007-05-14 10:37 pm

#3

• 2007-05-14 10:37 pm

• #3

Why is that Andrew?

 

Leolabs

Member

Joined 2004

2007-05-15 3:49 am

#4

• 2007-05-15 3:49 am

• #4

Depends on what type of MOSFETs.

 

kASD

Member

Joined 2004

2007-05-15 4:00 am

#5

• 2007-05-15 4:00 am

• #5

That design is good for lateral mosfets only, but never attempt it with hexfets or verticals.