Mosfet amp, 5 pairs IRFP240/9240

[PMA]

Is a very good idea!

regards,

Carlos

Yes, Pavel Dudek has introduced this mechanical design 20 years ago.

 

[Federmann]

Yes, Pavel Dudek has introduced this mechanical design 20 years ago.

Yes PMA, Yes, you are right, but Bohumi Federmann has introduced this mechanical design 38 years ago

 

[vanadoo]

Where Mr. Federmann? Please show

 

[Federmann]

Where Mr. Federmann? Please show

Your first post. Veli good. The thread is something else.

 

[lubo28]

What´s wrong with your last revolutionary design, cooling with case? http://www.diyaudio.com/forums/vend...mp-5-pairs-irfp240-9240-a-12.html#post2655262
Why did you use ancient vertical heating profile? The cooper bars Pavel Dudek introduced, like PMA writes.

 

[Federmann]

I for the manufacture of mechanical parts are still waiting, you also please be patient.

 

[Federmann]

What´s wrong with your last revolutionary design, cooling with case? http://www.diyaudio.com/forums/vend...mp-5-pairs-irfp240-9240-a-12.html#post2655262
Why did you use ancient vertical heating profile? The cooper bars Pavel Dudek introduced, like PMA writes.

I named the mechanical structure of HM/AAA or Heavy Metal Analog Audio Amplifier

HM/AAA aneb Heavy Metal Audio Analog Amplifier

 

[jacco vermeulen]

Very pretty, looks to steal, Mr Federmann.

 

[Upupa Epops]

...I named the mechanical structure of HM/AAA or Heavy Metal Analog Audio Amplifier...
Really, Federmann ? And 38 years ago ? In bolshevik age ? So you was really brave man...

 

[Federmann]

All wiring is very easy ...

Paul very nice work, but very many connections, and little cooling.

 

[Federmann]

Paul HM/AAA or Heavy Metal Analog Audio Amplifier, few connections, and very many cooling.

 

[Upupa Epops]

Really, Federmann? This amp gives 120W/ch and heatsink is 130x300x40 mm, while yours gives 500W/ch (how you declare) and heatsink is 150x400x40 mm...Which one of these has larger area for this nominal power dissipation? And connection: I am using for output 120W 2x2 16A WAGO, TWO IN PARALLEL, while you for 500W only 2x1pin, which have only 12A...What do you mean, which one connection will have higher reliability ?

 

[lubo28]

Paul very nice work, but very many connections, and little cooling.

Many, connections? Input, output, power supply and that´s all. It´s more connections on this picture

Little cooling? No, it´s only larger PCB than yours Bohumil.

 

[Federmann]

Top and bottom cover is cooling too. Front and rear panel is also cooling. It is HM/AAA (Heavy Metal Analog Audio Amplifier).

 

[Federmann]

Cooler itself is thermally insulated, no one help him. Many of the screws.

 

[Federmann]

Really, Federmann? This amp gives 120W/ch and heatsink is 130x300x40 mm, while yours gives 500W/ch (how you declare) and heatsink is 150x400x40 mm...Which one of these has larger area for this nominal power dissipation?

What is more?

Heatsink 120x400x40mm + Cover 360x360x6mm + panel 360x100x10mm vs. Heatsink 130x300x40mm

 

[Upupa Epops]

I have any problems with cooling of this amp and many users too, Federmann...is funny, if you argue with cooling of bottom and upper cover, 'cos there is air circulation minimal and exchange of the heat into air will be only symbolic, particularly if you give him into the rack...
BTW, efficiency of cooling by these parts was demonstrate by your prototype of this amp, which was without heatsinks...

 

[Federmann]

Federman, how I see, your electronic hobby lead to prenatal age......all you know, all is your design..hard to debate with you, I don't like your brainstorming...

Upupa: You do not agree with me, especially when you do not understand.

 

[Upupa Epops]

Do you mean that it is my duty to understand everything you claim?

 

[Federmann]

Nobody can know everything.