100w Amplifier using mj2955...

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100w Amplifier using mj2955...

Post by Wilson123 on Fri Aug 30, 2013 8:00 pm

Sir meron po akong problema sa aking 100w amp. umuugong sya pero may music naman na lumalabas sa speaker.
Ano po ba ang dahilan bakit umuugong ang speaker.

Ito po ang mga parts ng amp ko:

1pc ecaps 10,000uF / 50v
1pc 470 ohms / 5w resistor
1pc 12 ohms / 5w resistor
1pc output transformer 100w
1pc input transfomer TBZ-1 (hindi ko alam kung ilang watts to.)
4pcs transistor mj2955

Ito yung sa supply ko:

1pc 12-0-12 transformer
1pc ecaps 4700uF / 25v
2pcs diode 6 ampers
1pc Glass Fuse


Meron pa pong problema umusok po yung diode ko bakit po ganon?
Maari nyo po ba akong matulungan sir?

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100w Amplifier using mj2955...

Post by Ahmadiloz on Fri Aug 30, 2013 8:59 pm

Wilson123 wrote: Sir meron po akong problema sa aking 100w amp. umuugong sya pero may music naman na lumalabas sa speaker.
Ano po ba ang dahilan bakit umuugong ang speaker.

Ito po ang mga parts ng amp ko:

1pc ecaps 10,000uF / 50v
1pc 470 ohms / 5w resistor
1pc 12 ohms / 5w resistor
1pc output transformer 100w
1pc input transfomer TBZ-1 (hindi ko alam kung ilang watts to.)
4pcs transistor mj2955

Ito yung sa supply ko:

1pc 12-0-12 transformer
1pc ecaps 4700uF / 25v
2pcs diode 6 ampers
1pc Glass Fuse


Meron pa pong problema umusok po yung diode ko bakit po ganon?
Maari nyo po ba akong matulungan sir?






try kong SASAGOT sa prob mo..
bka sakaling tama....
based on my experience..


may pre amp ba to?
kung meron man, subukan mong paandarin sya na hndi pa naka conect sa booster baka dun galing ung ugung... pag wala dun try mo magbaba ng value sa ground resistor ng booster amp mo..
ex. 470ohms/5watts.
try mo palitan ng 300ohms/5watss to 200ohms/5watts..

sa 12-0-12 na umuusok na diode.
ilang amps to??
baka may short sa gruond or leak Ecaps..


silip'2 lang pre....
suyod din pag may time ...




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Re: 100w Amplifier using mj2955...

Post by arkin on Sat Aug 31, 2013 6:51 pm

Very Happy booster pla to.dati nabang ganon yan?o bago pa lng..kong dati nang ganon yan,cguro sa amp galing yang ugong na yan.mali ang idea na babaan ang resistor sa ground,masyadong mainit yan.

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100w Amplifier using mj2955...

Post by Ahmadiloz on Tue Sep 03, 2013 5:48 pm

arkin wrote: Very Happy booster pla to.dati nabang ganon yan?o bago pa lng..kong dati nang ganon yan,cguro sa amp galing yang ugong na yan.mali ang idea na babaan ang resistor sa ground,masyadong mainit yan.
pero na try ko nman po sir Arkin ehh ... Smile
heheheh...300ohms/10 watts ang nilagay ko,
mainit nga sya pero di namn gaano...

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Re: 100w Amplifier using mj2955...

Post by kchrysz15 on Wed Sep 04, 2013 1:15 am

mga sister 2 s hometown q plakasan din ng sounds, puro boosterized, gamit nmin d2 330 ohm/10 watts en 15 ohm/10 watts, try ninyo, if you like onion happy 

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Re: 100w Amplifier using mj2955...

Post by DJFEL on Wed Sep 04, 2013 10:45 pm

ano apdit neto..paki selep nang diagram neto para ma tombok naten...

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Re: 100w Amplifier using mj2955...

Post by arkin on Thu Sep 05, 2013 8:42 pm

@kchrysz15,hindi sa value nagkatalo dyan.basta fit ang bias voltage nito,khit anong value,ok pa rin yan.basta marunong ka lng magcompute ng bias voltage.

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Re: 100w Amplifier using mj2955...

Post by kchrysz15 on Fri Sep 06, 2013 12:50 am

@ sis arkin, thnx 4 d info . ill kip dat in mond....

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Re: 100w Amplifier using mj2955...

Post by DJFEL on Mon Sep 09, 2013 8:58 am

try mo 10 ohm pa taas yong bias neto hanggang clear na yong out neto..

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Re: 100w Amplifier using mj2955...

Post by DJFEL on Mon Sep 09, 2013 9:02 am

yong 12 ohm pala try mo 10 ohm at yong 470 try mo 330 ohm...basta hanggang clear yong out nito..

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Re: 100w Amplifier using mj2955...

Post by Ahmadiloz on Tue Sep 10, 2013 4:56 pm

tama!

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Re: 100w Amplifier using mj2955...

Post by daredevil on Sun Dec 07, 2014 10:39 pm

baka naman may sunog na pcb na nag ko cause ng pag init ng diode.....

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Re: 100w Amplifier using mj2955...

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