900W H-class PA Amp with Limiter

[apexaudio]

EAW and ECLER uses NVMOS in their amplifiers

Which models? Do you have schematics? Only this topology (quasi AB or H with nmos) is interesting.
Regards

 

[kASD]

DPA-T SERIES - Ecler - Sound experience


I dont have schematic of ECLER, but i have built Class-H/G with N-channel MOSFET and IGBTs also.

 

[HighTec]

Little off topic,

Speaking of Ecler DPA series, does someone want to share with us those schematics? Btw, I have Ecler PAM2600/1400/1000/600/300 series, service manuals if you're interested.

 

[apexaudio]

Little off topic,

Speaking of Ecler DPA series, does someone want to share with us those schematics? Btw, I have Ecler PAM2600/1400/1000/600/300 series, service manuals if you're interested.

Yes, please,
Regards

 

[apexaudio]

Little off topic,

Speaking of Ecler DPA series, does someone want to share with us those schematics? Btw, I have Ecler PAM2600/1400/1000/600/300 series, service manuals if you're interested.

Thank you, ECLER use quasi nmos output stage for PA on right way, like ARCAM for Hi-Fi with bootstraping positive rail... not like many diy designs, there is much to learn if anybody want to use this topology.
Regards

 

[qsa]

Thank you, ECLER use quasi nmos output stage for PA on right way, like ARCAM for Hi-Fi with bootstraping positive rail... not like many diy designs, there is much to learn if anybody want to use this topology.
Regards

Can I get this schematics too ?

qsaelectronic@yahoo.com

thanks

 

[qsa]

Little off topic,

Speaking of Ecler DPA series, does someone want to share with us those schematics? Btw, I have Ecler PAM2600/1400/1000/600/300 series, service manuals if you're interested.

Do you know Class H NMOS amps too ?

I think all Ecler are Class AB

 

[qsa]

@ apexaudio

Does Input Limiter in your class H amp work with 4n35 or 4n32 LED LDR device too ?

 

[apexaudio]

@ apexaudio

Does Input Limiter in your class H amp work with 4n35 or 4n32 LED LDR device too ?

No, only resistor output optocoupler will work in limiter.

 

[qsa]

No, only resistor output optocoupler will work in limiter.

does work IC HCNR201 or HCNR200 work as optocoupler limiter in your circuit ?

any substitute IC for HCNR201 ?...another supplier / brand

 

[apexaudio]

does work IC HCNR201 or HCNR200 work as optocoupler limiter in your circuit ?

any substitute IC for HCNR201 ?...another supplier / brand

I not found resistor out optocoupler in case like ICs.

 

[Gitsa]

Apexaudio, can set h900 v2 components? Thanks

 

[apexaudio]

Apexaudio, can set h900 v2 components? Thanks

See post #119, only comutation diode is different.
Regards

 

[kASD]

H11F1 optocoupler from Fairchild works best, as it contains a floating JFET with ON resistance=200 ohm

 

[apexaudio]

H11F1 optocoupler from Fairchild works best, as it contains a floating JFET with ON resistance=200 ohm

I agree, this is something new for me, and I like to see this optofet in some comercial amplifier in limiter circuit.
Regards

 

[Gitsa]

This can help.

I need this kind post 109

 

[apexaudio]

Apex h900 v2

I need this kind post 109

This?

 

[Gitsa]

This?

Yes.Thanks.

 

[apexaudio]

Yes.Thanks.

Pcb layout for H900V2 is different. Do you have this pcb layout?
Regards

 

[apexaudio]

H900v2 pcb

H900V2 pcb with dual diode.