900W H-class PA Amp with Limiter

[andrewlebon]

Hello Apexaudio
greetings sunfire TD class smd transistors FMMT4403 FMMT4401 any substitue for these transistors as they are hard to get maybe even obselete now

warm regards
Andrew

 

[DC sound]

Hello Apexaudio
greetings sunfire TD class smd transistors FMMT4403 FMMT4401 any substitue for these transistors as they are hard to get maybe even obselete now

warm regards
Andrew

Hi Andrew,

pls try see the datesheet of this part 2n4403 & 2n4401, I think the only difference is their packaging...


regards..
kahibulongan tribes..

 

[Techpolice]

h900 tef

Hi to all diyer's
is this correct or wrong?

 

[apexaudio]

Hello Apexaudio
greetings sunfire TD class smd transistors FMMT4403 FMMT4401 any substitue for these transistors as they are hard to get maybe even obselete now

warm regards
Andrew

Use BC327 and BC337...

 

[andrewlebon]

sunfire TD class

Another schematic of sunfire TD class

 

[stewin]

nice but it is a very long circuit and produces only 500wts

 

[andrewlebon]

SUNFIRE TD CLASS SUB AMP

Hello Mile
greetings as you suggested sunfire TD class amplifire section tested
in AB class mode its working now step section just need to clarify
few things thanks for your advice
warm regards
Andrew

 

[Techpolice]

sir mile,
pls kindly check post #3163

 

[Techpolice]

h900 tef

sir mile pls check for errors pls

 

[Techpolice]

Schenatic h900 tef

Part List of H900 TEF

pls pm the schematic of your h900 tef sir

 

[Techpolice]

i'm beginning to wonder why still no 3EF pcb have been shared,
after all the info and details have already been shared,
wish i have the tools for designing pcb,from software to materialisation

hey engel.do you have the full schema for the h900 tef with 8 output?if you give i'll design the pcb for you.

 

[rohin]

hi techpolice,good to see h900 tef pcb with 8 pair.only apex sir can help and willy too because he already made tef but with 4 pair. after mje 15032 and 33 add one power transistor then he send signal to all output transistor.not so expert i am.some one surely will help you.will you share you tef h900 pcb?

 

[Techpolice]

hi techpolice,good to see h900 tef pcb with 8 pair.only apex sir can help and willy too because he already made tef but with 4 pair. after mje 15032 and 33 add one power transistor then he send signal to all output transistor.not so expert i am.some one surely will help you.will you share you tef h900 pcb?

if someone gives me the complete detail of schematic i will surely share the pcb design.

 

[juanete]

AMPLIFIER POWER

how it is this amplifier?
Project 117 what is the class of this? H D OR ...

 

[apexaudio]

how it is this amplifier?
Project 117 what is the class of this? H D OR ...

It is simple class AB amp like BA1200

 

[juanete]

amplifier power

Project 117 ,and what is the real power in 4 ohms and 8oms per chanel? if i use the +- 150v, and how much amper?

 

[apexaudio]

Project 117 ,and what is the real power in 4 ohms and 8oms per chanel? if i use the +- 150v, and how much amper?

It is not real amplifier, just idea.

 

[Techpolice]

It is not real amplifier, just idea.

sir mile,
what can you say about my pcb?h900 with 8 pairs of output

 

[remle114]

sir mile can i use BYV26C intead of BAV21?

 

[engel dela pena]

hey engel.do you have the full schema for the h900 tef with 8 output?if you give i'll design the pcb for you.

same schematic
only the output tef arrangement
here
adding more output need to change driver transistor
this modification is old as this thread and b500
but nobody share pcb after all of triple ef
hope you make it this time