Author Topic: WESTRAK AMP NA 500 WATTS @ 8 OHMS LOAD (Read 46882 times)

Johannah Aleksandria · « **Reply #660 on:** December 31, 2011, 07:16:40 AM »

Triple darlington pala ang output na wala sa feedback ang driver.
Di mo pwedeng itesting ng walang output tranny ang ganitong output stage sis, dapat ayusin mo muna tlaga ang assembly.
Try at lower voltage at 1 pair of output. Kahit +/-25vdc lang muna or kabit mo muna sa 110 transformer para kalahati muna ng supply ang lalabas.
Wala kasing feedback galing sa output pag wala ang output tranny kaya di maging stable ang input stage mo.

Philippine Electronics Forum · « **Reply #660 on:** December 31, 2011, 07:16:40 AM »

BhongTech · « **Reply #661 on:** December 31, 2011, 08:31:38 AM »

^ agree, hindi ko napansin ito kaagad.kailangan talagang may nakakabit na o/p tranny para makapag adjust ng maayus sa dc offset ng amp nito.
maganda siguro yung mga nakagawa na nito ay i post kung anu ang resistance ng final adjustment sa magkabilaang trimmer para gawin na lang fix resistor,disavantge nito ay pagnag loose ang trimmer.

Philippine Electronics Forum · « **Reply #661 on:** December 31, 2011, 08:31:38 AM »

jb1_amp · « **Reply #662 on:** December 31, 2011, 08:40:10 AM »

s input Differntial ng trimer po b more or less 600mv ang nasukat ko s output. pero pinipihit ko un trimer ndi aman nababago voltage, $:-\$ normal po b e2. ndi po parin ntunog westrak ko.

Philippine Electronics Forum · « **Reply #662 on:** December 31, 2011, 08:40:10 AM »

Disabled · « **Reply #663 on:** December 31, 2011, 08:41:25 AM »

timing! eto nakabukas ung WESTRAK ko ngayon

eto naging adjustments ko:

Philippine Electronics Forum · « **Reply #663 on:** December 31, 2011, 08:41:25 AM »

jb1_amp · « **Reply #664 on:** December 31, 2011, 08:47:12 AM »

GDam po mga sis cnu po kya nkabili ng mga pcb ng westrak ni Sir marpilyo dati. pahingi po sana ako ng instruction guide para step by step mkuha ko biasing nito. patulong aman po s inyo. salamt po.

Philippine Electronics Forum · « **Reply #664 on:** December 31, 2011, 08:47:12 AM »

BhongTech · « **Reply #665 on:** December 31, 2011, 08:54:20 AM »

▲narito na lahat ng kailangan mong impormasyun sir.

Mhavskie · « **Reply #666 on:** December 31, 2011, 08:59:21 AM »

Quote from: Hengilbert on December 31, 2011, 08:41:25 AM

timing! eto nakabukas ung WESTRAK ko ngayon
eto naging adjustments ko:

check mo na din sis kung ano resistance ng trimmer sa ganyang posisyon

Disabled · « **Reply #667 on:** December 31, 2011, 09:01:58 AM »

basta magkabaliktad sila

wala akong tester ngayon nasira..

tinanggal ko na din ung dalawang 15k na nasa LTP at ginawang jumper..

jb1_amp · « **Reply #668 on:** December 31, 2011, 10:48:12 AM »

ok sir gayahin ko nlng yan

pero sir engilbert bka pede pa post ng actual picture ng mga parts kasama mga trimer kung pwede po salamat.po for d info. icocompare ko lng s ginawa ko. more power happy new year.

jb1_amp · « **Reply #669 on:** December 31, 2011, 10:55:20 AM »

bkit u po pla sir jumper un 15k , wla po b efect to $:-\$

jb1_amp · « **Reply #670 on:** December 31, 2011, 11:16:50 AM »

Sir Hengilbert kakahiya man waiting nlang muna ako s actual pic. nakakaexcite kc

Disabled · « **Reply #671 on:** December 31, 2011, 11:18:12 AM »

ok teka buksan ko ulit para may magamit ka

Disabled · « **Reply #672 on:** December 31, 2011, 11:37:27 AM »

jb1_amp · « **Reply #673 on:** December 31, 2011, 05:07:55 PM »

sir sobrang salamat s inyo... 2 channel po b ginawa u bridgeable po westrak u...tnx po ul8..

Disabled · « **Reply #674 on:** December 31, 2011, 05:54:34 PM »

ok na ba ampli mo?

wala akong planong i bridge pero pede yan...

Engr. Dacuycoy · « **Reply #675 on:** December 31, 2011, 06:59:01 PM »

Quote from: jb1_amp on December 31, 2011, 10:55:20 AM

bkit u po pla sir jumper un 15k , wla po b efect to $:-\$

Quote from: jb1_amp on December 31, 2011, 05:07:55 PM

sir sobrang salamat s inyo... 2 channel po b ginawa u bridgeable po westrak u...tnx po ul8..

magnew-new year na bulol ka pa din magsalita... bawal dito txt speak sa technical

happy new year sa lahat

jb1_amp · « **Reply #676 on:** December 31, 2011, 07:02:27 PM »

ndi ko p sir nagagawa e. nautusan mgpaanak ng baboy

bka after new year ko n matapos... salamat sir sa mga pic. at info.

Sir kya kya ng westrak un 600-1000w n TNT sub ko L36 box....

happy new year poh

Mhavskie · « **Reply #677 on:** December 31, 2011, 07:14:53 PM »

Quote from: jb1_amp on December 31, 2011, 07:02:27 PM

ndi ko p sir nagagawa e. nautusan mgpaanak ng baboy bka after new year ko n matapos... salamat sir sa mga pic. at info.

Sir kya kya ng westrak un 600-1000w n TNT sub ko L36 box....

happy new year poh

ma walang galang na po madami ka po yatang load baka pwede pa share naman

jb1_amp · « **Reply #678 on:** December 31, 2011, 07:24:32 PM »

mahina signal ng sun e..... naghang nadoble pala...

jb1_amp · « **Reply #679 on:** December 31, 2011, 07:34:24 PM »

Sorry

bos engr. 1st timer e. ganito pala dito s elab.... pero ang alam ko sa forum na ito sharing of knowledge...

sensya n boss..

Philippine Electronics Forum · « **Reply #679 on:** December 31, 2011, 07:34:24 PM »

Author Topic: WESTRAK AMP NA 500 WATTS @ 8 OHMS LOAD (Read 46882 times)

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