So a cascode on top of the front end to keep the Jfets from frying, and what else?
Sounds interesting. 🙂
Sounds interesting. 🙂
Zen Mod what is your point? I read F3 and ZM #8 articles. I am not talking about SE Class A JFET/MOSFET amp, but PP Class AB amp. To my knowledge FW hasn't designed such an amp yet, PassLabs did, several in fact. If I missed FW design or if this has been discussed in some other FX threads, pls point me to the thread, but F3 or ZM #8 is _not_ what I am looking for.
cascoding , same as modulated cascoding , is covered in FW F3 article
I was replying to 6L6 , without seeing that his post is more reply to your's , then general question
whatever - idea about lighter biased F5 is covered already , somewhere in F5 threads
I was replying to 6L6 , without seeing that his post is more reply to your's , then general question
whatever - idea about lighter biased F5 is covered already , somewhere in F5 threads
No problem, if you can point the page where this was discussed I would appreciate it. I want to have a lower bias but higher +- rails, that would make MOSFETs work in class AB switched mode, producing more power. I doubt that this can be done without having a new driver stage.
Stupid question, but its taking me way to long to search up the answer:
Where on the schematic does r35 and the led go? Can i use any led and a 50k trimmer pot to adjust the light to my taste? I like them dim. I´m making my ft p2p wired, and the picture of the board tells me to little.
Also the original schematic differs quite a lot from the one in the store now. What are the big difference in functionality?
Again, I know these questions are stupid, there is just to much irrelevant information out there.
Thanks!
Where on the schematic does r35 and the led go? Can i use any led and a 50k trimmer pot to adjust the light to my taste? I like them dim. I´m making my ft p2p wired, and the picture of the board tells me to little.
Also the original schematic differs quite a lot from the one in the store now. What are the big difference in functionality?
Again, I know these questions are stupid, there is just to much irrelevant information out there.
Thanks!
yup - led and trimpot will do - connect it between any side of PSU and gnd ;
regarding differences between F5 origigi and store pcbs - search for Cviller's blog
regarding differences between F5 origigi and store pcbs - search for Cviller's blog
There's even another different F5 schematic in the F5 Turbo manual which I think is the latest version.
Pot. P3 is added to tweak input symmetry for lowest distortion.
The input resistors R1&R2 are new values and configured differently. Thermistors TH1&TH2 are not connected to the rails. Not sure what those changes accomplished. Probably subtle differences.
TH1 and TH2 is connected to the other side (after) source resistor. insted of before source resistor.
That is what I´m talking about. Why are we doing this? Have searched for a while now. The blog only mentioned the cascoding and more output mosfets. I´m bulding the standard first.
Do you know any place in trondheim to get sheet aluminium and aluminium angles, by the way?
Do you know any place in trondheim to get sheet aluminium and aluminium angles, by the way?
Haha, I was hoping for a "do it this way, ´cause its better!"
Thanks, I´ll call them tomorrow!
Thanks, I´ll call them tomorrow!
