Sorry Sakis, I wrote my relply before seeing your last reply. I would agree with you 100% that when posting a design on any forum or public domein that your information should be accurate.
yes niko
active posting i like that
the truth is that me and john fisher worked this schematic out 2 yeras ago spended a lot of time on it we both like that is so simple to make and with very simple material we spended a lot of time together a lot of emails ( john really didnt had the time for it )
and eventhough amp was updated with onsemi paired MJ11015+11016 wonderfull powerfull and very close to eachother darligtons ...the amplifier is actually working but the performance is terrible related for example to dx amplifier by destroyer x and or others
but the main issue was that the amp was not STABLE
bench tests were ok
but in practice bit of overload bit of strange load bit of high voltage rails always made transistors blown
that s the problem
PS using p and n transistors cooled one in new york and other in texas is thermal run away !!!!!!!!!!
active posting i like that
the truth is that me and john fisher worked this schematic out 2 yeras ago spended a lot of time on it we both like that is so simple to make and with very simple material we spended a lot of time together a lot of emails ( john really didnt had the time for it )
and eventhough amp was updated with onsemi paired MJ11015+11016 wonderfull powerfull and very close to eachother darligtons ...the amplifier is actually working but the performance is terrible related for example to dx amplifier by destroyer x and or others
but the main issue was that the amp was not STABLE
bench tests were ok
but in practice bit of overload bit of strange load bit of high voltage rails always made transistors blown
that s the problem
PS using p and n transistors cooled one in new york and other in texas is thermal run away !!!!!!!!!!
Re: yes niko
Try with the mosfets, you may find a pleasant surprise.
sakis said:active posting i like that
the truth is that me and john fisher worked this schematic out 2 yeras ago spended a lot of time on it we both like that is so simple to make and with very simple material we spended a lot of time together a lot of emails ( john really didnt had the time for it )
and eventhough amp was updated with onsemi paired MJ11015+11016 wonderfull powerfull and very close to eachother darligtons ...the amplifier is actually working but the performance is terrible related for example to dx amplifier by destroyer x and or others
but the main issue was that the amp was not STABLE
bench tests were ok
but in practice bit of overload bit of strange load bit of high voltage rails always made transistors blown
that s the problem
PS using p and n transistors cooled one in new york and other in texas is thermal run away !!!!!!!!!!
Try with the mosfets, you may find a pleasant surprise.
i had my share
of mosfets also some circuits can really work fine .....i hope you didnt mean to mod the john fisher amplifier to a mosfet amplifier .....
i gave up on it 2 years ago .....i am curently working other circuits
but thanks niko mostly for given the opertunity to explain whats going on
very friendly regards sakis
of mosfets also some circuits can really work fine .....i hope you didnt mean to mod the john fisher amplifier to a mosfet amplifier .....
i gave up on it 2 years ago .....i am curently working other circuits
but thanks niko mostly for given the opertunity to explain whats going on
very friendly regards sakis
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