MOSFET Amplifier IRFP240/IRFP9240

[kandimba]

My contribution for this amplifier.

 

[luca30]

thats quick Andrew, . meanwhile i made another version. but the one you already made is best.
just remember to use metal film / carbon film for the zobel Resistor, as wirewounds can cause oscillation . just something i learnt recently on Mooly's mosfet amp thread.

regards
prasi

Hi, build this prototype and it works great with + -47vdc, I got 112w (30v at the speaker output) with a consumption of 3.75A
a marvel

 

[katiyar]

Which is the final HV23 schematic and pcb layout to build.

 

[NMOS]

My contribution for this amplifier.

9240 and 240

are not complementary, look at the curves.

These are switching devices and its properties are not suitable for linear amplification

You only have to use N Channel Switching Mosfets. Build the same amplifier with just N-Channel IRFP240 and you will hear the difference

Then you will throw the 9240/240 Mosfet amp in the bin

 

[kandimba]

Which is the final HV23 schematic and pcb layout to build.

Maybe you should do this.

 

[prasi]

9240 and 240

are not complementary, look at the curves.

These are switching devices and its properties are not suitable for linear amplification

You only have to use N Channel Switching Mosfets. Build the same amplifier with just N-Channel IRFP240 and you will hear the difference

Then you will throw the 9240/240 Mosfet amp in the bin

Hello NMOS, can you suggest any good amp with N-ch mosfets only

 

[apexaudio]

Hello NMOS, can you suggest any good amp with N-ch mosfets only

N20, NX300...
150W MOSFET Amplifier with IRFP250x2

 

[rankot]

MOS200 II

How much output power MOS200 can give? 200W?

 

[NMOS]

Class AB not make sense to much output power due heat dissipation

with 70 V DC you can get 400 W RMS 4 Ohm using 2 pair Mosfets Fairchild / Onsemi FDA69n25

 

[stewin]

Class AB not make sense to much output power due heat dissipation

with 70 V DC you can get 400 W RMS 4 Ohm using 2 pair Mosfets Fairchild / Onsemi FDA69n25

i guess clarity is what guys are looking for when making ab circuits

 

[NMOS]

i guess clarity is what guys are looking for when making ab circuit

I have finished PCB updated NMosfet Amp from ACTRK 400/600 Quasi schematic with 1 pair Mosfet including protections

 

[rankot]

Class AB not make sense to much output power due heat dissipation

with 70 V DC you can get 400 W RMS 4 Ohm using 2 pair Mosfets Fairchild / Onsemi FDA69n25

You're talking about MOS200 II amp or something else?

 

[NMOS]

You're talking about MOS200 II amp or something else?

ACTRK 400/600

 

[rankot]

ACTRK 400/600

OK. Got it. Can I use that schematic for lower voltage (±40V) and only one pair of output MOSFETs?

 

[NMOS]

OK. Got it. Can I use that schematic for lower voltage (±40V) and only one pair of output MOSFETs?

yes

 

[rankot]

yes

OK, thanks a lot!

 

[rankot]

yes

I actually need it for a bass amplifier. 🙂 Can it be used for that? If not, could I modify it somehow so it can be used for such a purpose?

 

[NMOS]

for bass its better to use class D

 

[BODA0007]

please i need the PCB OF APEX HV23 TITAN 16 TRANSISTOR AND APEX HV23 TITAN 16 TRANSISTOR WITH ROTECTION
PLEASE PLEASE PLEASE
MY EMAIL IS
GOLDENSTARS@OUTLOOK.FR

 

[BODA0007]

clipping indicator not working on simulation

hello guys

I have a little problem with the clipping indicator circuit seem not to work on simulation, does "PRO" need to be connected in order to clipping indicator to work? I'm attaching the multisim 14 file and PDF

I most then making a mistake for sure, but I'm not sure what it is 🙁

Regards
Juan

please can you send me the pcb of this power amp ... my email : goldenstars@outlook.fr