hi akraj your design looks fine . but since i have found the schematic i will redraw and build one based on double sided . according to the forum i have learnt that class d performs best when using double sided boards that is when screened .
Yes thanks, has using before same PSU/SMPS with 12V and 80V ouput.and get short circuit.
After separate and using 2 PSU .amp is working and cold.
I say to you and all diy...its a pain to get 100% working devices like IC
I made the amp and not working, get frusttration, think and think what is wrong ?
I buy 8 pcs. 74HC04 from 2 different supplier (Philips-NXP and TI Texas Instruments) from 8 pcs. 3 IC not working, after replace IC amp working, then I have test the rest 74HC04 IC and find 2 more defective IC
Same with IR2110, have buy 10 pcs. and find 2 defective
what a **** !!!
Same with me sir .my 74H04 is not working.i replace with HEF4069 now all is well..
Good luck for ur IC .. 😉
I have problem, have make AUD600 but have on negative rail -80 VDC after connect + 12 DC bias.
But If I take out tl071 IC and connecc witht bias no DC rail comed out
Im using 2 separate PSU
With speaker music comes out with distortion and after disconnect 230 V for PSU
Music play clear short time with stored energy from elko
Any ideas to solve problem ?
Hi NMOS,
may be wrong with your inverter IC use 74HC04 or 74HC14 or CD4069 all these will change DC offset voltage, for low OFFSET use 74HC04
Regards
MANOJ
Have make IRS4K5 but big Problem, not working !
NE555 and LM311 very hot after 1 minte
IR2110 - NXP HEF4049 or Texas Instruments CD4049 - TL 071 cold and have 12V bzw. 5V rail
Red Protect LED is on and IRS4K5 not work
does this PCB working or is it fake ?
I have replace all, ICs, Mosfets everytime same fault
Does somebody have solution ?
NE555 and LM311 very hot after 1 minte
IR2110 - NXP HEF4049 or Texas Instruments CD4049 - TL 071 cold and have 12V bzw. 5V rail
Red Protect LED is on and IRS4K5 not work
does this PCB working or is it fake ?
I have replace all, ICs, Mosfets everytime same fault
Does somebody have solution ?
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please check your board thoroughly because i have made three of them and they work . except you have to do a lot of debugging because the pcb traces are very close.
Im using mosfet IRF640n can you check my pic and green IRS4K5 pcb file is it the same like yours ?
or can you send me your file,
phoonpool@googlemail.com
then I can check by myself, I dont like spend time if its a fake
best regards
hi nmos please change the diode fra is talking about. i made the one using the to 247 package i used irfp260n x 3pairs gate resistors were 100ohms
hi nmos please change the diode fra is talking about. i made the one using the to 247 package i used irfp260n x 3pairs gate resistors were 100ohms
Ok thanks have change diode 1N4148 look pics
then have check my board all look ok
Then After connect with Rail Ics and Mosfets are cold
Green Led flash short time and speaker make plopp after connect with rail.
Amplifier have no DC at outpurt all looks ok,
After disconnect Rail green Led flashs about 3 seconds and speaker make plopp plopp plopp plopp
But Im worry now,... no music comes out.
have replace all ICs but same like before, no music comes out
Then have amp connect with PC Soundcard, with maximum Volume output from Soundcard I get distortion noise
I dont know what can I do to get music?
I cant see fault in Board, any idea to solve problem, have upload pics from Board
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check connections and all tranzistor.
what kind diode did you inserted instead mur160?
what kind diode did you inserted instead mur160?
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hi nmos i still insist you go through all the pcb traces again . i faced the same issues because pcb traces are so close together. i had to recheck many times but the pcbs i made all worked after many rechecking and clearing the tracks.
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