forgot...
After turning on and waiting the time the 1000uF are filling about 15 sec and you see your LEDs flickering, turn off! In this case you have an AC of around 24V at the output, you can see it by changing your DMM from DC (offset measuring) to AC. Really heavy!
In this case you can be sure you made a fault in the PTP of the xformer, mostly I changed upper and lower secondary or even the phase of one secondary winding. Not looking thorough fully on which side point 5 really is.....😡
would not happen with a pcb, but with ptp changing the xformers often, it happens every third time..
After turning on and waiting the time the 1000uF are filling about 15 sec and you see your LEDs flickering, turn off! In this case you have an AC of around 24V at the output, you can see it by changing your DMM from DC (offset measuring) to AC. Really heavy!
In this case you can be sure you made a fault in the PTP of the xformer, mostly I changed upper and lower secondary or even the phase of one secondary winding. Not looking thorough fully on which side point 5 really is.....😡
would not happen with a pcb, but with ptp changing the xformers often, it happens every third time..
My 'guess' would be that if you build the same power supply as you would for an F5 you'll be just fine.
Regards,
Dan
F6 has a bit higher demands than F5 I think. 1,2A against 1,5A (F6)...
but of course you can go to any value between 1,3 and 1,5
and Nelson uses in F3 and F5 and J2 and M2 and....... so on always 300W Plitron...
I do not know if they are especially good for their money.....😀
o.k. I understand! 😀
for me impossible.....
price is high, that is o.k., but postal fees too hard!
as I wrote few times already - I'm having 20km away from me , xformer vendor with exquisite quality ; when I say that I need xformmer for audio , especially for A class ..... man knows his drek
so - it's completely logical that you're having the same in Germany , one ring or e-mail away ....
recently I reworked one F4 , made by local guy for another guy , in my Babelfish J ;
when I was told that big donut (in amp ) is all away "from Germany !!" ( well ,special quality , not being locally made ) I just couldn't stop laughing ...........
ook me , I am a blind , but not so much that someone can sell me ********* for ********* , teling how grass is always greener on other side of yard fence
so - it's completely logical that you're having the same in Germany , one ring or e-mail away ....
recently I reworked one F4 , made by local guy for another guy , in my Babelfish J ;
when I was told that big donut (in amp ) is all away "from Germany !!" ( well ,special quality , not being locally made ) I just couldn't stop laughing ...........
ook me , I am a blind , but not so much that someone can sell me ********* for ********* , teling how grass is always greener on other side of yard fence
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PCB F6 audio amplifier
........ my contribution 🙂 single side PCB
Regards Alex.
........ my contribution 🙂 single side PCB
Regards Alex.
Attachments
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R1a and R1b - footprint isn't too small ?
besides that - dunno how much is Jensen sensitive to output trace , right underneath ; top gnd maybe good idea ?
maybe to make it little bigger and include trimpot in parallel to upper secondary
......can shield the transformer to the pcb with a tin between transformer and pcb if necessary . I think not so big problem 🙂 Thanks for comments .😉
Footprint for R1A and R1B are ok .
Footprint for R1A and R1B are ok .
naah
you can always use some wire there 😉
it's also handy not having pcb welded to outputs ........ for possible tweaking purposes
you can always use some wire there 😉
it's also handy not having pcb welded to outputs ........ for possible tweaking purposes
Attachments
beautifull pcb Alex !!!
its proberly been mentioned before in this thread ,but can we still get the
R100
i thought semisouth was no longer
Sheafer
its proberly been mentioned before in this thread ,but can we still get the
R100
i thought semisouth was no longer
Sheafer