to nicoch58 - why do You think so ??? I know that original schematic has Mr Nelson Pass but maybe someone has working schematic of F7 like amplifier - is it something wrong to project and build similar amplifier ????
It seems to me that I have seen at least one workable schematic posted
around here. It's not a complicated topology at all.
around here. It's not a complicated topology at all.
Nelson general question: if you want to introduce some specific THD profile in FE of an amp, is it necessary to use mismatched FE jfets or you can use matched and play with that pot in between them?
We can't share a simulation... But you can read Papa's words on previous pages - there is at least one working schematic in this thread.
Google a bit for positive feedback amp.
Draw an F5 schematic, then apply positive feedback to it.
Use lat's instead of hex's.
Get rid of bipolars and circuits around bipolars.
Then, go through this theme and look for similar schematic.
Now, simulate it to get values of the components used.
Google a bit images of F7 amplifier.
Take a look at pdf manual at FirstWatt website.
.... and if all went fine .....
Congrats, you've reverse engineered an electronic device and made a working simulation of it!
Google a bit for positive feedback amp.
Draw an F5 schematic, then apply positive feedback to it.
Use lat's instead of hex's.
Get rid of bipolars and circuits around bipolars.
Then, go through this theme and look for similar schematic.
Now, simulate it to get values of the components used.
Google a bit images of F7 amplifier.
Take a look at pdf manual at FirstWatt website.
.... and if all went fine .....
Congrats, you've reverse engineered an electronic device and made a working simulation of it!
I got this from google. Please delete message if it is illegal here 😉.
Hello Nag. I posted the schematic you displayed in your post [above] early on in this thread when others and I were guessing what F7 can be. I don't think it is illegal to show or work with. I am surprised that your search of Google found it in the presence of many more sound schematics say from lhquam, and from other DIYers more qualified than I.
