Power mosfet DIY topologies of tube ampli Single-ended

amberaudio · 9th December 2011, 11:32 AM

hi all
Im live in viet nam,I want to conjugate gently design acoustical circuit owing to me.

AndrewT · 9th December 2011, 11:43 AM

Q4 collector to GND?
Would it change performance if this collector were to -V?

ontoaba · 11th December 2011, 08:57 AM

Hi, I live in indonesia.
With that choke, half DC voltage will dissipated to hot 4r7 resistor. You could use boost converter to supply V+ , instead of dissipate it with 4r7 resistor.

amberaudio · 01:40 AM

Quote:

Originally Posted by ontoaba

Hi, I live in indonesia.
With that choke, half DC voltage will dissipated to hot 4r7 resistor. You could use boost converter to supply V+ , instead of dissipate it with 4r7 resistor.

Hi my friend,
thank you for wiewing, you may notice 4r7 is actually 15w6ohm8. I will post demo kit now.

supply V+ 24 and V-24.

amberaudio · 12th December 2011, 02:05 AM

choke and corner DIY of me.

ontoaba · 12th December 2011, 06:05 AM

Choke is big. Nice choke.
Thanks for sharing.

amberaudio · 12th December 2011, 09:32 AM

Quote:

Originally Posted by AndrewT

Q4 collector to GND?
Would it change performance if this collector were to -V?

Hi my friend
you can see power supply is +24 and -24, Q4 collector to GND this ok.

amberaudio · 12th December 2011, 09:34 AM

Quote:

Originally Posted by ontoaba

Choke is big. Nice choke.
Thanks for sharing.

thank you so much
make choke and OPT is my job, 30 year and 1 job

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9th December 2011, 11:43 AM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	Q4 collector to GND? Would it change performance if this collector were to -V?

11th December 2011, 08:57 AM	#3
ontoaba diyAudio Member Join Date: Nov 2009 Location: Kudus, & Malang	Hi, I live in indonesia. With that choke, half DC voltage will dissipated to hot 4r7 resistor. You could use boost converter to supply V+ , instead of dissipate it with 4r7 resistor.

12th December 2011, 06:05 AM	#6
ontoaba diyAudio Member Join Date: Nov 2009 Location: Kudus, & Malang	Choke is big. Nice choke. Thanks for sharing.