The problem is probably that I'm scared to give it horns. This is a hobby for me and getting cash a tad limited. I don't want to blow the IC since it costs a bit here.
The popping's speed increases with the voltage to up to 17VDC ( there I lose the heart to go higher for now.) It sounds like a Harley
PS I'm running a variac into a 35-0-35 DC supply (No regulation but HUGE caps).
The components aren't getting warm yet, do you think I should go a bit higher?
The popping's speed increases with the voltage to up to 17VDC ( there I lose the heart to go higher for now.) It sounds like a Harley
PS I'm running a variac into a 35-0-35 DC supply (No regulation but HUGE caps).
The components aren't getting warm yet, do you think I should go a bit higher?
even i had such a problem before.
but my problem was solved when i placed the cd player on a pillow.
the speaker vibrations were making the cd player pop. looolll
i think ur problem might be due to caps. have u places caps at the chips psu pins? and also a cap at the mute pin and ground.
and i would suggest using 2 4700uf caps instead of one 10000uf cap. in psu.
i think ur problem might be solved.
and if ur not so confident i would suggest to put a fuse near the speakers so that they dont blow up.
usually this doesnt happen in chip amps as they have lots of protection circuitry
but my problem was solved when i placed the cd player on a pillow.
the speaker vibrations were making the cd player pop. looolll
i think ur problem might be due to caps. have u places caps at the chips psu pins? and also a cap at the mute pin and ground.
and i would suggest using 2 4700uf caps instead of one 10000uf cap. in psu.
i think ur problem might be solved.
and if ur not so confident i would suggest to put a fuse near the speakers so that they dont blow up.
usually this doesnt happen in chip amps as they have lots of protection circuitry
Wynand said:I'm trying to start an amplifier up (LM3876) but at +-13VDC my speaker starts popping.
I noticed that my input capacitor's polarity is the other way around than National's Datasheets, would this be the problem or does the polarity of THIS cap not matter?
AC-couple the input is no good(you never know what signal may come out of a source). I might or might not AC-couple the feedback.I like a feedback cap to set DC gain to unity.
so,I think you can remove C1,move R4 after R2,use BP cap for C5.
Z
The Problem was found!!!!
merely a novice's mistake.
I forgot to connect pin 7 to ground when I etched/drew it.
Thus there was no reference to GND which let it float which caused what I suspect a DC voltage to apear at the output.
Luckily my speaker still works, although its a rubbish one anyway.
merely a novice's mistake.
I forgot to connect pin 7 to ground when I etched/drew it.
Thus there was no reference to GND which let it float which caused what I suspect a DC voltage to apear at the output.
Luckily my speaker still works, although its a rubbish one anyway.
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