40W Power Amplifier

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Re: 40W Power Amplifier

Post by danny on Mon 16 Jun - 8:12








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Re: 40W Power Amplifier

Post by danny on Mon 16 Jun - 8:13

ay bakit isa lang ang lumabas

apat yung ni load ko

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Re: 40W Power Amplifier

Post by ultrasonic™ on Tue 17 Jun - 6:06

bka nmn nilagay mo na sa kahon sir danny.. tapos pang gift mo sakin. advance xmas gift ^_^
ganda ng E.caliper nyu sir

btw.. sir danny pa tutor kami sa amp mo..
ano ano ba ang advantages nito sa ibang amps  ^_^

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Re: 40W Power Amplifier

Post by danny on Tue 17 Jun - 6:29

ok
I will post some tutorial about this amp
sa susunod. Medyo busy lang ako at the moment
 Very Happy 

stay tuned

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Re: 40W Power Amplifier

Post by james on Tue 17 Jun - 16:11

May tutorials pala dito paabang mga sir.

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Re: 40W Power Amplifier

Post by danny on Wed 18 Jun - 11:30

Abang muna kayo
saglit lang medyo busy pa Very Happy 

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Re: 40W Power Amplifier

Post by james on Thu 26 Jun - 14:39

Meron na ba sir?

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Re: 40W Power Amplifier

Post by danny on Sat 28 Jun - 5:36


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Re: 40W Power Amplifier

Post by danny on Sat 28 Jun - 5:37

ay nde lumabas

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Re: 40W Power Amplifier

Post by danny on Sat 28 Jun - 5:38


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Re: 40W Power Amplifier

Post by danny on Sat 28 Jun - 5:39

ok post ko muna schematic
stay tuned ulit  Very Happy 

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Re: 40W Power Amplifier

Post by Electro on Mon 28 Jul - 5:08

mga master. paano po i bias ang ampli nato?

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Re: 40W Power Amplifier

Post by Electro on Wed 30 Jul - 12:33

pag hindi ba ito na bias. masisira ang transistor o speaker?

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Re: 40W Power Amplifier

Post by alvinquimbo on Thu 31 Jul - 1:30

@sis electro masisira yung tranny yan sis pag di proper bias..para kasi magfeedback yata yan sa tranny pag no proper biasing...hintay nalang tayo sa explanation ni sir danny sis electro baka ma-explain nya to ng bongang-bonga..2014-07-31 onion happy 

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Re: 40W Power Amplifier

Post by Hertz on Thu 31 Jul - 11:29

danny wrote:

Sir Danny. iyan na po ba ng pinaka latest na revision ng 40W?
Electro wrote:mga master. paano po i bias ang ampli nato?

Electro, tumutunog na ba ang amplifier na binuo mo?
hayaan mo lang na uminit ang heatsink niya para masimulan mong maibias. sukatin mo lang ang wire-wound resistor habang unti-unting ina adjust mo ang trimmer. idle current 3.5mV puede na dyan. DC offset voltage  less than +/-50mV

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Re: 40W Power Amplifier

Post by Electro on Fri 1 Aug - 8:07

opo. master tumutogtog na po siya. sobrang init lang ng transistor baka masira.

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Re: 40W Power Amplifier

Post by Electro on Fri 1 Aug - 8:08

salamat po master. tanong ko na rin po ang wire wound resistor. iyan po ba iyonmg 5W resistor sa board? san ko po lagay ang test probe ng tester?

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Re: 40W Power Amplifier

Post by arkin on Fri 1 Aug - 9:12

pkisawsaw lng ha Very Happy hwag mo hintaying uminit trany mo,set na kaagad bias pra iwas problema.try mo basic method bias check.base to emiter chek lng,klangan d lagpas .5v reading nto[.4 mas ok].[output or driver trany]at klangan equal ang reading per rail.chek rin colector emiter voltage f equal ba at dapat equal din sa power suply mo.

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Re: 40W Power Amplifier

Post by danny on Fri 1 Aug - 10:10

Electro wrote:mga master. paano po i bias ang ampli nato?

Set the bias to 8mV

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Re: 40W Power Amplifier

Post by danny on Fri 1 Aug - 10:11

Hertz wrote:
danny wrote:

Sir Danny. iyan na po ba ng pinaka latest na revision ng 40W?
Electro wrote:mga master. paano po i bias ang ampli nato?

Electro, tumutunog na ba ang amplifier na binuo mo?
hayaan mo lang na uminit ang heatsink niya para masimulan mong maibias. sukatin mo lang ang wire-wound resistor habang unti-unting ina adjust mo ang trimmer. idle current 3.5mV puede na dyan. DC offset voltage  less than +/-50mV

sis herts yes
ito ang latest na manual

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Re: 40W Power Amplifier

Post by danny on Fri 1 Aug - 10:13

sorry sa late reply
medyo busy lang ako
post ninyo lang ang mga katanungan

@electro
musta naman ang sound quality?

pls give me feedback

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Re: 40W Power Amplifier

Post by Electro on Sat 2 Aug - 5:28

ok naman po ang tunog niya master danny. mainit lang talaga ang transistor C5200 at A1943. halos hindi mahawakan ng kamay.
mga master masusukat ko ba iyang bias sa wirewound resistor?
nakaparallel po ba ang test probe ko dyan o si series ko? 
+1 po sa inyong lahat master hertz, arkin at master danny.
sundin ko po payo niyo

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Re: 40W Power Amplifier

Post by danny on Sat 2 Aug - 12:05

please read this article

http://ronelex.com/bias-current-output-transistor-amplifier/156/

this is pretty much the industry standard on
how to measure the bias / idling current of an amplifier.

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Re: 40W Power Amplifier

Post by danny on Sat 2 Aug - 12:28




then set it to 8mV


hope this helps.

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Re: 40W Power Amplifier

Post by danny on Sat 2 Aug - 12:29

Electro wrote:ok naman po ang tunog niya master danny. mainit lang talaga ang transistor C5200 at A1943. halos hindi mahawakan ng kamay.
mga master masusukat ko ba iyang bias sa wirewound resistor?
nakaparallel po ba ang test probe ko dyan o si series ko? 
+1 po sa inyong lahat master hertz, arkin at master danny.
sundin ko po payo niyo

can you post some video

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Re: 40W Power Amplifier

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