40W Power Amplifier

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Re: 40W Power Amplifier

Post by DJFEL on Sun Aug 03, 2014 1:42 pm

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

yaps...yong sinabe ni sis danny hinde na bias yan...yong na sa picture...yon ang pang bias...

hinty sa updit...

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Re: 40W Power Amplifier

Post by danny on Mon Aug 04, 2014 3:56 pm

please measure the bias
baka masyadong mataas ang na memeasure sa testpoint
make sure nasa 8mV lang.

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Re: 40W Power Amplifier

Post by Electro on Mon Aug 04, 2014 8:23 pm

Sorry po mga master. ngayon lang po nakapasok na busy ako kanina sa shop. Sorry Sorry  worship 

update po ako bukas. mali pala talaga ang ginawa ko. sineries ko sa resistor ang tester. pinutol ko ang paa ng mga resistor

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Re: 40W Power Amplifier

Post by danny on Tue Aug 05, 2014 11:51 am

you are measuring a current pag ganyan

please update us pag nagawa mo na

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Re: 40W Power Amplifier

Post by Electro on Tue Aug 05, 2014 4:48 pm

mga master. ok na po ang ampli ko. salamat po talaga. normal na po ang init niya. nilakihan ko na rin ang heatsink niya ayon sa advice ni master ultrasonic sakin. kaya pala sobrang init niya kasi umabot ng 0.020v ang nasukat ko. salamat po talaga mga master. na solve ko ito dahil ang galing niyo.

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Re: 40W Power Amplifier

Post by danny on Tue Aug 05, 2014 4:57 pm

hows the highs and the lows
can you post some video

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Re: 40W Power Amplifier

Post by Electro on Tue Aug 05, 2014 5:39 pm

ok naman ang tunog niya master. highs diba tunog ng medrange iyan master? low naman ang bass? Ok naman sila pariho master. malinaw ang kanta at boom boom niya. nilagay kong speaker ay dalawang x653 200w. naka parallel siya. isang malaking speaker naman master para pangbaho. Sorry po master hindi ko po alam paano mag post rito ng video

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Re: 40W Power Amplifier

Post by DJFEL on Wed Aug 06, 2014 1:08 pm

Electro wrote:ok naman ang tunog niya master. highs diba tunog ng medrange iyan master? low naman ang bass? Ok naman sila pariho master. malinaw ang kanta at boom boom niya. nilagay kong speaker ay dalawang x653 200w. naka parallel siya. isang malaking speaker naman master para pangbaho. Sorry po master hindi ko po alam paano mag post rito ng video


ganon pala...pinotol pala...vias ang kolang dyan sis...

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Re: 40W Power Amplifier

Post by Digitap on Wed Aug 06, 2014 1:55 pm

upload lang po sa youtube

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Re: 40W Power Amplifier

Post by Hertz on Wed Aug 06, 2014 8:44 pm

danny wrote: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.

Good reference. +1 for Sir Danny.

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Re: 40W Power Amplifier

Post by danny on Thu Aug 07, 2014 11:40 am

thanks sa points.  Very Happy 
sana maibigan ninyo ang sound quality nito.
sa sunod I will make a higher wattage.

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Re: 40W Power Amplifier

Post by ultrasonic™ on Tue Aug 12, 2014 5:17 pm

waiting ako nito  ^_^

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Re: 40W Power Amplifier

Post by danny on Wed Aug 13, 2014 12:31 pm

sure
abang lang muna kayo
medyo busy lang

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Re: 40W Power Amplifier

Post by james on Fri Aug 15, 2014 7:26 pm

Asan na po yung medyo high wattage?

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Re: 40W Power Amplifier

Post by ultrasonic™ on Sat Aug 16, 2014 11:17 am

Sir danny. kong mas High Powered na yan.. So sobrang laki na ng trafo namin?
class AB pa rin po ba o class H na?  o Class A  ^_^

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Re: 40W Power Amplifier

Post by danny on Sat Aug 16, 2014 3:12 pm

naku nde naman super lakas
mga 100 or 150W lang siguro
para mas mura  Very Happy 

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Re: 40W Power Amplifier

Post by danny on Mon Aug 18, 2014 11:58 am

gagawan ko ng bagong thread yung
new design ko  Very Happy 

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Re: 40W Power Amplifier

Post by DJFEL on Mon Aug 18, 2014 1:41 pm

maganda tong new nito ha...

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Re: 40W Power Amplifier

Post by danny on Mon Aug 18, 2014 5:19 pm

gagawan ko pag ready na
hehehe stay tuned lang muna mga sis  Very Happy 

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Re: 40W Power Amplifier

Post by alvinquimbo on Mon Aug 18, 2014 5:54 pm

cge sir danny,antay kami nyan..new project nanaman...tanong ko pala sir danny,pag magbias ka ba doon sa trimmer dapat ba may input or pwede na wala? Very Happy 

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Re: 40W Power Amplifier

Post by james on Mon Aug 18, 2014 10:08 pm

Wala. Syempre kapag may input nagbabago ang reading. Itama na lang po kung mali ako.

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Re: 40W Power Amplifier

Post by alvinquimbo on Tue Aug 19, 2014 7:40 am

@james salamat.. goodjob 

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Re: 40W Power Amplifier

Post by danny on Tue Aug 19, 2014 11:18 am

tama si james
dapat wala kang input signal. Smile

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Re: 40W Power Amplifier

Post by ultrasonic™ on Tue Aug 19, 2014 2:19 pm

sakin.. pgnag ba bias ako.. sinishort ko temporarily ang input pin ng amp to ground...

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Re: 40W Power Amplifier

Post by james on Tue Aug 19, 2014 6:50 pm

Gagawa ako neto, busy lang talga kasi. Daming tulog na gagawin pa.

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Re: 40W Power Amplifier

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