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BOOSTER AMPLIFIER (MONO) using MJ2955

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Post by ultrasonic™ Mon Oct 10, 2011 2:07 pm



^^ tnx dito sis.. very useful

+1 point ka sa akin..
enidit ko na din para magkasya dito (^_^),V,,

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Post by eysi Mon Oct 10, 2011 9:14 pm

To:Vhonnah

Thank you for the formula..

More power and God Bless.
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Post by 01110011 Thu Oct 13, 2011 4:52 pm

sir naa ka formula pila ka turns ang 500 watts

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Post by vhonnah Fri Oct 14, 2011 8:11 pm

sensya sis wla akong 500 watts na formula, nakuha ko lang yan sa lumang libro ni marconi pagarigan, almost 20 years na yan sakin enidit o lang kasi sira na yung libro ko sa katagalan. meron pa ako isang furmula sa paggawa ng power x'former kasama rin yan sa libro kaya lang di ko pa nakita. post ko nalang susunod kung makita ko na.
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Post by 01110011 Sat Oct 15, 2011 9:23 am

ah ok try ko lang mag experiment lol! aware
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Post by 01110011 Sat Oct 15, 2011 9:24 am

thanks po pala sa formula +1 for Smile u
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Post by Steel Rain Mon Oct 17, 2011 7:47 am

pwede bang mag parallel ng 4 transistors,bali 8 lahat ang total sa dlwang junction,sa 100W audio booster?

if 150W audio booster ang balak kung gawin,dapat bang baguhin ang value ng dalwang rsistor?

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Post by 01110011 Mon Oct 17, 2011 3:41 pm

hindi nah, lagay ka ng mas maraming pairs of trannies para hindi maxadong uminit
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Post by jimsky143 Fri Nov 11, 2011 6:30 pm

mga sir unsa d i part list anang bass ug treble para ani nga booster?
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Post by 01110011 Fri Nov 11, 2011 8:22 pm

· Electrolytic Capacitors
o 3 – 47 µF, 16 V
o 3 - 4.7 µF, 16 V
o 2 – 100 µF, 16 V
o 1 - 1000 µF, 16 V
· 1 Ceramic Capacitor (102)
· Mylar Capacitors
o 4 - .01 µF
o 3 - .1 µF
o 1 – 222 µF
· Resistors
o 2 – 1 KΩ ( ¼ watt)
o 2 – 1.5 KΩ (¼ watt)
o 1 – 1 MΩ (¼ watt)
o 1 – 10 K Ω (¼ watt)
o 1 – 10 Ω (¼ watt)
o 1 – 560 KΩ (¼ watt)
o 1 – 560 KΩ (¼ watt)
o 1 – 3.3 KΩ (¼ watt)
o 3 - 100 KΩ (¼ watt) potentiometer for bass treb and volume
· 1 - 828 Transistor
· 1 - IC AN-7161
· Heat Sink
kung stereo x2 ang mga parts at dual gang ang pot
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Post by 01110011 Mon Nov 14, 2011 8:18 pm

BOOSTER AMPLIFIER (MONO) using MJ2955 - Page 3 Pcblayout

eto po yung pcb
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Post by jimsky143 Tue Nov 15, 2011 5:57 pm

sir naa paba nay schematic diagram?
ug naa paba kay lain dha nga dali ug sayun ra himuon?
naa nay booster nako diri gbaligya rani sa akua,gusto nako butangan ug tone cntrol...

lahi lagi ang partlist ani nga booster ky 300 ug 20 ohms 5W ug 4700uF ang cap. pero stereo..nya AC na murag 10A man cguro supply ani. butangan unta nako ug tone kay ang ngdrive ani kay amp sa PC TDA2822.
salamat daan sa makasuggest
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Post by 01110011 Tue Nov 15, 2011 7:10 pm

ok ra na kc ang booster puwede ka mag mods pwede sad templahan (as we call it here) ang 2822 ky hinay ra kaayu ug output mao nga dili kusog iimo booster ,naa schematic somewher in this forum .
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Post by 01110011 Tue Nov 15, 2011 7:11 pm

fifteenwatts wrote:BOOSTER AMPLIFIER (MONO) using MJ2955 - Page 3 Pcblayout

eto po yung pcb
naa ni sya tone control mau nga daghan ug parts pero mono ra
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Post by jimsky143 Wed Nov 16, 2011 11:19 am

sir ang schematic ani naa?
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Post by dongdaps Sun Nov 20, 2011 2:00 am

Sir Ultrasonic newbies po ako. nakabili po ako ng 30W bass guitar Amplifier Roland cube-30. Pwede ko po bang ikabit itong booster na ito para maging 100W output? hindi kaya ma apektuhan ang original output frequencies? or kung may kilangan pa akong additional components, ano po kaya ang dapat. Salamat po.
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Post by mcrommel Sun Nov 20, 2011 3:38 pm

@ Ultrasonic .. ano po ba kaibahan sa
200 watts output trans4mer w/ secondary
200 watts output trans4mer w/out seondary?
thx
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Post by 01110011 Mon Nov 21, 2011 6:34 pm

dongdaps wrote:Sir Ultrasonic newbies po ako. nakabili po ako ng 30W bass guitar Amplifier Roland cube-30. Pwede ko po bang ikabit itong booster na ito para maging 100W output? hindi kaya ma apektuhan ang original output frequencies? or kung may kilangan pa akong additional components, ano po kaya ang dapat. Salamat po.
ok rin total mataas ang distortion pwede dagdag effect
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Post by popcorn Tue Nov 22, 2011 4:23 pm

mcrommel wrote:@ Ultrasonic .. ano po ba kaibahan sa
200 watts output trans4mer w/ secondary
200 watts output trans4mer w/out seondary?
thx

ako pud ani mga masters ngita ko clarification between the two, w/ and w/o secondary.
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Post by mcrommel Fri Nov 25, 2011 8:32 pm

naa man gug uban transformer ang output naay secondary.. naay
0-4-8-16 ohms sa pikas terminal sa output transformer..
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Post by jeffrey.fabian10 Mon Nov 28, 2011 4:06 pm

tambay going to cry going to cry
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Post by samiel Mon Nov 28, 2011 9:17 pm

gaano ba kalaki yung baterry ng motor mo? baka d kaya ng battery mo kaya humihina agad yung sound...may u box ba motor mo? try mo bnk bk-700...tama lang sa batery ng motor...usb player,auxillary in,may fm,stereo na cya...75watts per channel,may remote control pa,ganda sound nya...
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BOOSTER AMPLIFIER (MONO) using MJ2955 - Page 3 Empty naa ko nakitan uban 4 power trans...pwd??

Post by mitch Thu Dec 01, 2011 10:36 pm

ultrasonic™ wrote:no need to xplane na yata eto , kahit sino familiar dito most common amplifier circuit kahit sino marunong gumawa nito. magtanong tanong nalang kau or just ask nlng sa forum nato


add trivia nlng BOOSTER amplifier in electronic term are known as a PUSH PULL TYPE amplifier
gitawag na xag push pull its b-coz its hav two power switching transistor na magpuli-puli ug on ug off ... pangutana nganu kinahanglan mn mapalong palong ang operation nga pwde mn naka-on nlng pirme diba? ang tubag ana kay of course kung dli magpalong palong ang operation understood or sabotable na DC out ang labas sa audio output nga dili pwde sa SPEAKER kay masunog xa.. dapat AC signal lng ang iyang ginareceive.. (^_^)

now im xur naa na pud moy pangutana regarding sa power wattage ani.. pila kahay wattage ani? 50W kaha., 100W or mas taas pa?

ang tubag ana kay nagadefende na xa sa inyong power output transformer, kung 50W.. 50W pud ang labas ana.. kung gus2 nimu 100W of course 100W pud ang emng output transformer na gamiton.. but olwayz remember dis kung taas gani ang power output transformer nimu.. u must to add power transistor na MJ2955.. magparallel connection ka.. meaning ang base ikabit sa base, ang emitter ikabit sa emitter, ug ang collector ikabit sa collector ... e.g: kung 100W dapat duha duha ka transistor bawat junction, kung gusto pa jud nimu patas-an dungag na pud kag transistor gets ninyu? kung wala gani just txt me or ask lng mu dre ok (-_-)

BOOSTER AMPLIFIER (MONO) using MJ2955 - Page 3 Boosterdiag

SCHEMATIC DIAGRAM

COMPONENT PARTLIST:

2pcs. MJ2955 POWER TRANSISTOR
1pc. 470 ohm 5Watts
1pc. 20 ohm 5Watts
1pc. Audio input transformer 15Watts
1pc. Audio output transformer 50Watts (100W for 100watts operation & add two power transistor)
Aluminum Case & other accesories

BOOSTER AMPLIFIER (MONO) using MJ2955 - Page 3 Boosteramp
PICTORIAL DIAGRAM / WIRING DIAGRAM

BOOSTER AMPLIFIER (MONO) using MJ2955 - Page 3 Pictorial
FINAL OUTPUT


naa ko nakitan uban 4 power trans.pwd ka mkahimo 4 power transistor og pra sa newbies sama nako pwd ba wla preamp diritso ra sa player..ang supply nga 12v o 24v pwd apil nimo post sa wiring assembly nga pic..advance thnz more power..
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Post by arkin Fri Dec 02, 2011 1:04 pm

hindi output trans4mer lng ang ngpa2lakas ng boster,kombinasyon yan ng lahat na psa.input,output,power transistor at suply.hindi mamodify ng output trans4mr ang rated power ng transistor Laughing .ibig sabihin ba,pagnaglagay ka ng 20w transistor,tapos 500w ang output,maging 500w ang boster nyo?MALI!!!khit 200w ang transistor,at 12v ang supply mo,d rin aabot sa peak power ang transistor mo.kya aksaya lng sa pera ang malaking output.
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Post by arkin Fri Dec 02, 2011 1:16 pm

mas maganda kong alamin nyo muna kong ano ang rated power at maximum voltage ng tranisitor mj2955,pra magkaideya kyo kong gaano kalaking output ang gmitin nyo.TANDAAN!!hindi output trans4mer ang nagbi2gay ng power!khit wlang output trans4mer,kya pa rin itong mkaproduce ng malakas n sound,bastat may power transistor..TANONG LaNG:hindi nyo pa ba alam yong output tans4merless na boster?
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