hi apex,
this is the final pcb.what about zf15 connected to nsl32.iwill be using
mur1560/stth15r06 instead of 1620ct.will it be ok.
pcb size is 296x62mm .
http://img535.imageshack.us/img535/3548/46787365.gif
thanks in advance
ravs
be a vegeterian.....
Last edited:
hi sekhar,
sorry for so late.actually iam going to make the pcb through screen printing.
the width of traces automatically get reduced a bit.anyway i have reduced
the width of the tracks for you.silkscreen is the same as for mine.if you
want further reduced the width please let me know.this pcb is almost 1 foot in length.locally only 1x1 foot copper sheets are available here.will you be able to source bigger copper sheets.if so i ll add another 2 pair of tranistors.
i doing another pcb also. power transistors on both sides 7 pairs.it is half
completed.will complete it soon.btw where you are getting your heasinks
from.i got my heatsinks for first 2 amplifiers from a scrap dealer(kabadi).
now i dont know where to get them .importing is out of question.no luck
in searching it in lr market in delhi.
regards
ravs
be a vegeterian......
yes andrew toshiba's 2-10r1a package i am looking
for hexfet with full plastic body so that no insulation or just a mica is need when installing in the heatsink .
regards
sekhar
F12C20C is dual diode, and can be use for H900 V2 or for TL072 class H step driver.
Regards
hi sekhar,
iam waiting for the verification of the pcb by apex.i have posed the pcb for you as well in post 982.
regards
ravs
be a vegeterian......
apex,
workhorse,
& other class h guru's
i have aiwa stereo inquiry,a little bit off topic but still in class h,
model cx-na909u
hav'nt seen schematic yet(if anyone has,i'm badly needed it please)
but from power supply analysis provably class h,
4 pair output,1 pair is 20-0-20 other pair is 40-0-40,
a clicking relay sounds then shut down the power everytime any push button press open/close cd,tuner, etc,
i found rk34(schottky barrier diode)shorted,temporarily replace by in's___ diode amp working but not exeeding volume to 20, amp LV must be working and the HV is not 20 vol up then the power is shut off again,eventually the other rk34 is open,now even the LV is not working.
please help me i have verry small class h knowledge,
but then thanks to apex,for sharing knowledge and experience,thanks also to workhorse for all those support,to mr andrewt the SOA master
workhorse,
& other class h guru's
i have aiwa stereo inquiry,a little bit off topic but still in class h,
model cx-na909u
hav'nt seen schematic yet(if anyone has,i'm badly needed it please)
but from power supply analysis provably class h,
4 pair output,1 pair is 20-0-20 other pair is 40-0-40,
a clicking relay sounds then shut down the power everytime any push button press open/close cd,tuner, etc,
i found rk34(schottky barrier diode)shorted,temporarily replace by in's___ diode amp working but not exeeding volume to 20, amp LV must be working and the HV is not 20 vol up then the power is shut off again,eventually the other rk34 is open,now even the LV is not working.
please help me i have verry small class h knowledge,
but then thanks to apex,for sharing knowledge and experience,thanks also to workhorse for all those support,to mr andrewt the SOA master
You can remove step driver, I suggest to add some DC offset adjust circuit if you don't want use DC servo.
Regards
Attachments
if add some DC offset, what would be the proper connection sir, can you help me plz, i realy want your vertex amp,...if i make the vertx amp, which is your attachment, it will work Good and what would be the dis advantage and advantage if no step driver?...and how much the wattage w/o step driver? thank more power!!!...
regads
I prefer DC servo with LF411 or TL071. For simple DC offset adjust use 100R variable resistor instead R73, R75 (47R). Sound is similar to CA and PRO amps of 'crest audio', good for me.
Regards
