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Old 3rd February 2015, 08:04 PM   #1
pepbox is offline pepbox  United Kingdom
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Smile Amplifier circuit from Elektor

Hello to you all, does anyone know where I can get a copy of the following article in Elektor, "High-Power AF amplifier" it used Hitachi MosFets and was in a 1986 edition, any help would be most appreciated. Pepe
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Old 3rd February 2015, 10:02 PM   #2
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Here is a Hitachi lateral mosfet amplifier circuit.
I took this and added numerous improvements for myself.
I added decoupling of front end from output stage.
I changed front end transistors to mpsa42/92.

If you cant find mosfets for it I used ALF16N16W and ALF16P16W lateral mosfets.
Click the image to open in full size.
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Old 3rd February 2015, 11:12 PM   #3
pepbox is offline pepbox  United Kingdom
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Hello Nigel, thank you for the information, unfortunately this is not the article I was looking for the one I wanted either used 8 Toshiba Mosfets and the other one used Siemins BUZ musfets, but I will try this one anyway, thanks once again Pepe
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Old 4th February 2015, 04:39 PM   #4
mabery is offline mabery  Netherlands
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Quote:
Originally Posted by pepbox View Post
Hello Nigel, thank you for the information, unfortunately this is not the article I was looking for the one I wanted either used 8 Toshiba Mosfets and the other one used Siemins BUZ musfets, but I will try this one anyway, thanks once again Pepe
I recall the Crescendo and Mini Crescendo amplifiers using 2SK135/2SJ50 pairs
I have build the Mini version and etched my own pcb during those years for my guitar combo amp. Worked very well...

I still have the PCB and the ILP HY-83 preamp module. the amp cab was destroyed
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Old 4th February 2015, 06:27 PM   #5
mjf is offline mjf  Austria
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......yes,the crescendo has four hitachi fet per channel.......

in the elektor "audio-schaltungsbuch" there is an amp called "gigant" with 8 hitachi fet per ch......

and a "buzamp" with 4 buz23 per ch.
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Old 26th March 2015, 07:32 PM   #6
el156 is offline el156  Portugal
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Here is the BUZ23 amplifier...i made one years ago,very good amp, then sold it and the owner is still very pleased with it.
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