Class Mosfet power amplifier circuit

Agus Widarto · 12th December 2007, 06:03 PM

Hai Friends...! I have 4 pcs 2SK 725 and 4 pcs 2SK 727. I want to bulid Class A Power Amplifier with these Mosfet but I dont have Circuit, can you help me please...?

Nelson Pass · 12th December 2007, 07:46 PM

I see that those are two different N channel parts with different
current and voltage ratings.

The 2sk725's voltage and current are quite suitalbe for building
a number of the Zen amplifiers, I think. The ones requiring two
N type Mosfets per channel.

The 727 has a 900 volt rating with a 5 amp current, and I imagine
it could be put to similar use if you like.

GRollins · 12th December 2007, 10:23 PM

A 5A rating sounds like a good preamp device.

Grey

Agus Widarto · 13th December 2007, 05:30 PM

Thank Mr Pass.. how if 2sk725 use for build Citation12 ? are possible ? Mr Pass I tell you idont have anything experience work with mosfets. All my power amplifier project are BIPOLAR, i dont like mosfets.. But after i liestening sound from ... ( look at the picture please.. ) oh i want to know / study about Mosfets! And i think your web site a the rigth pleace ! Thank

GBU

Nelson Pass · 13th December 2007, 07:06 PM

The only issue using these for a Citation 12 would be that
the parts are plastic TO-3P, and the originals are TO-3

Agus Widarto · 26th January 2008, 05:34 PM

Tet tet!!! Finaly i can finished my first project MOSFETs ( 2SK 725 )power amplifier but sorry is not Pass Amplifier..and not something special! i am just build and just do it!. Now ready to test my GONG#1 Power Amplifer!

Agus Widarto · 27th January 2008, 02:18 PM

Ee Hema here picture of My GONG #1 Mosfets Power Amplifier . hay friends did you know about GONG...? he he he

Agus Widarto · 27th January 2008, 02:18 PM

Here Picture of GONG, that is ethnic instrument.. from Java island

Agus Widarto · 14th February 2008, 05:09 PM

Hai Mr Pass
I am would like to ask about Aleph Power Ampliifer

Now I am during prepare spare parts of Aleph Power Amplifier
I need 150 Watts rms Power out put.
How many Mosfets per channel ?
How many micro farad of Capacitor?
How many Ampere ( VA ) of Toroid Transformer ?

I am all ready make PCB Aleph 4 but at there just for 12 Mosfets ( 100watts )

Thank you

regards

Agus

Agus Widarto · 16th February 2008, 05:50 AM

Hai... Mr Pass where are you...please! i am need your help advice

to all of you diy audio sorry with my english!

Thank and GBU!

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12th December 2007, 06:03 PM	#1
Agus Widarto diyAudio Member Join Date: Dec 2007 Location: Bekasi Indonesia	Class Mosfet power amplifier circuit Hai Friends...! I have 4 pcs 2SK 725 and 4 pcs 2SK 727. I want to bulid Class A Power Amplifier with these Mosfet but I dont have Circuit, can you help me please...?

12th December 2007, 07:46 PM	#2
Nelson Pass The one and only Join Date: Mar 2001	I see that those are two different N channel parts with different current and voltage ratings. The 2sk725's voltage and current are quite suitalbe for building a number of the Zen amplifiers, I think. The ones requiring two N type Mosfets per channel. The 727 has a 900 volt rating with a 5 amp current, and I imagine it could be put to similar use if you like.

12th December 2007, 10:23 PM	#3
GRollins diyAudio Member Join Date: Feb 2001 Location: Columbia, SC	A 5A rating sounds like a good preamp device. Grey

13th December 2007, 07:06 PM	#5
Nelson Pass The one and only Join Date: Mar 2001	The only issue using these for a Citation 12 would be that the parts are plastic TO-3P, and the originals are TO-3

16th February 2008, 05:50 AM	#10
Agus Widarto diyAudio Member Join Date: Dec 2007 Location: Bekasi Indonesia	Hai... Mr Pass where are you...please! i am need your help advice to all of you diy audio sorry with my english! Thank and GBU!

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