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Author Topic: B200 (TDA7924) or LM3886  (Read 2769 times)

Offline mund24

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Re: B200 (TDA7924) or LM3886
« Reply #40 on: May 17, 2012, 01:27:28 AM »
Quote from: Kasamiko on May 17, 2012, 12:28:00 AM
+1 sis...

bakit sa RS mahal yung mga TDA?
free na rin kasi delivery at the same time may assurance na genuine yung item/s

thanks sis :)
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Re: B200 (TDA7924) or LM3886
« Reply #40 on: May 17, 2012, 01:27:28 AM »

Offline mund24

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Re: B200 (TDA7924) or LM3886
« Reply #41 on: May 17, 2012, 01:35:57 AM »
Quote from: Kasamiko on May 16, 2012, 03:29:11 PM
I'm planning to built another IC amp based sa mga ito

LM3886
TDA7293
TDA7294


Ask ko lang muna if magkano ba yung price ng mga IC na yan?

Class AB sila kaya I'm sure mainit to...yung TDA 100 watts music power daw...

may naka pag try na ba nito?
may kunting advice lang ako, from other DIYers about TDA****

kunting ingat lalo if bridge/parallel kasi mahihirapan isustain yung higher temp./proportion with wattage, since smaller yung cast die neto unlike power trannies na easily dissipate higher temp.

dagdag na rin na medyo mas maselan eto (parang Shrapnel if may fault/over power na kasi mosfet eto :) ) at may pagka delay yung internal protection neto, unlike National Semi. na mas responsive yung internal protection nila (SPIKE and other protection)

if you want bridge/parallel with those TDA729* amp base, safer bet is lower the rail voltage :)
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Re: B200 (TDA7924) or LM3886
« Reply #41 on: May 17, 2012, 01:35:57 AM »

Offline Tukkar

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Re: B200 (TDA7924) or LM3886
« Reply #42 on: May 17, 2012, 03:38:05 PM »
delikado magbridge ng gainclones...kasi di nila kayang i sustain yung current requirements so mag auto cut off sila pag may short circuit protection...mas advisable pa magparallel...

yung lm3875 na 5 pins...meron pa ba at mga magkano kaya ito?
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Re: B200 (TDA7924) or LM3886
« Reply #42 on: May 17, 2012, 03:38:05 PM »

Offline mund24

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Re: B200 (TDA7924) or LM3886
« Reply #43 on: May 17, 2012, 03:58:48 PM »
lm3875 - 270php @newport

yan din hinahanap ko dati dito sa place ko kaso wala silang tindang ganyan dito, available lang yung lm1875 and lm3886

ok kasi yan dahil simple , only 5 pins , nakaka amaze :)
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Re: B200 (TDA7924) or LM3886
« Reply #43 on: May 17, 2012, 03:58:48 PM »

Offline Tukkar

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Re: B200 (TDA7924) or LM3886
« Reply #44 on: May 17, 2012, 04:29:51 PM »
thanks +1 ....me nakikita kasi ako ngayon puto miniwatt na kagaya ng lm3886 na ang pins....yung board design kasi ng papalitan ko is 5 lang...k3875 nga yung label kala ko mosfet pero bakit 5 pins? buti kamo me nakuha ako service manual...ayun lm3875 pala..
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Re: B200 (TDA7924) or LM3886
« Reply #44 on: May 17, 2012, 04:29:51 PM »

Offline mund24

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Re: B200 (TDA7924) or LM3886
« Reply #45 on: May 17, 2012, 05:01:26 PM »
thanks sis!

what k3875, baka naman OEM yan ng ibang company, or fabricated by other semicon company with permit by national semi
or may fake na rin yan? sana hindi :(

ok ang tunog ng mga gainclone (lm****)ng national semi. kahit quasi config ang mga eto :)
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Offline j a y k e z

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Re: B200 (TDA7924) or LM3886
« Reply #46 on: May 17, 2012, 05:02:52 PM »
LM3886 at LM1875 pa lang na try ko  ;D

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Re: B200 (TDA7924) or LM3886
« Reply #47 on: May 17, 2012, 05:11:06 PM »
LM3875 tested ko na, maganda rin.
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Offline mund24

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Re: B200 (TDA7924) or LM3886
« Reply #48 on: May 17, 2012, 05:14:10 PM »
ako rin :) and lm1875 , even TDA2050/30 mayroon ako!

pinabili ko yung lm3886 sa kapatid ko nung pumunta sya manila, for only 190php each, mura kasi nagpa assist sya sa kabarkada ng seller @raon

elibs nga ako kayang kaya nya i drive yung 2 ks-650v(pparallel) na speaker ko :) @35Vdc per rail
umiinit masyado yung heatsink ko kahit malaki :)
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Offline Ikasamoko

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Re: B200 (TDA7924) or LM3886
« Reply #49 on: May 17, 2012, 06:36:34 PM »
Samin  yung LM3886TF is 550php...:(
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Offline mund24

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Re: B200 (TDA7924) or LM3886
« Reply #50 on: May 17, 2012, 09:52:26 PM »
Quote from: Kasamiko on May 17, 2012, 06:36:34 PM
Samin  yung LM3886TF is 550php...:(
mahal nga yan sis! :(
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Offline j a y k e z

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Re: B200 (TDA7924) or LM3886
« Reply #51 on: May 17, 2012, 09:54:53 PM »
LM3886TF year 2006 P375 bili ko noon
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Offline mund24

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Re: B200 (TDA7924) or LM3886
« Reply #52 on: May 17, 2012, 10:02:51 PM »
^
mas mahal ng  yung TF version, but mas better ang heat dissipation ng T version :)
advantage naman ng TF since not metal yung TAB nya so isolated sya unlike T version

Ex. price comparison ng T vs TF in newport

LM3886T        275php
LM3886TF       350php
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Offline Tukkar

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Re: B200 (TDA7924) or LM3886
« Reply #53 on: May 18, 2012, 09:37:17 AM »
Quote from: mund24 on May 17, 2012, 05:01:26 PM
what k3875, baka naman OEM yan ng ibang company, or fabricated by other semicon company with permit by national semi
or may fake na rin yan? sana hindi :(

ok ang tunog ng mga gainclone (lm****)ng national semi. kahit quasi config ang mga eto :)

di sya fake kasi original sony multi system from US yung pinangalingan at me logo ng nat'l semicon logo,... yung nga lang nakakalito yung labeling nya...

yes mas maganda tumunog yung LM1875 at lm3875...maganda rin naman yung 3886 kaso mas preferred ko yung 1875 kaso medyo mahina nga lang...
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Offline jyjc

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Re: B200 (TDA7924) or LM3886
« Reply #54 on: May 23, 2012, 10:27:36 PM »
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Offline jyjc

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Re: B200 (TDA7924) or LM3886
« Reply #55 on: May 23, 2012, 10:27:55 PM »
Plan to Build din Hi Fi Amp cant decide pa din which one ang gagamitin ko TDA7294 or LM3886
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Offline TechG

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Re: B200 (TDA7924) or LM3886
« Reply #56 on: May 23, 2012, 10:37:19 PM »
Quote from: mund24 on May 17, 2012, 01:35:57 AM
may kunting advice lang ako, from other DIYers about TDA****

kunting ingat lalo if bridge/parallel kasi mahihirapan isustain yung higher temp./proportion with wattage, since smaller yung cast die neto unlike power trannies na easily dissipate higher temp.

dagdag na rin na medyo mas maselan eto (parang Shrapnel if may fault/over power na kasi mosfet eto :) ) at may pagka delay yung internal protection neto, unlike National Semi. na mas responsive yung internal protection nila (SPIKE and other protection)

if you want bridge/parallel with those TDA729* amp base, safer bet is lower the rail voltage :)

yung LM3886 mas ok ba sya in bridge mode kesa sa mga TDA9*
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Offline TechG

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Re: B200 (TDA7924) or LM3886
« Reply #57 on: May 23, 2012, 10:38:38 PM »
ano mas mataass wattage nila TDA7294 or LM3886
Mono and Bridge Mode?
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Offline jyjc

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Re: B200 (TDA7924) or LM3886
« Reply #58 on: May 23, 2012, 10:42:25 PM »
TDA7294 : Bridge Application Circuit


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Offline Disabled

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Re: B200 (TDA7924) or LM3886
« Reply #59 on: May 23, 2012, 10:45:47 PM »
LM3886 na.
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Re: B200 (TDA7924) or LM3886
« Reply #59 on: May 23, 2012, 10:45:47 PM »
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