Author Topic: Schematic diagram of 3watts stereo amplifier for pc speaker (Read 560 times)

jfar223344 · « **on:** January 10, 2011, 11:23:10 AM »

Mga master sino po meron sa inyo transistorize lang po na circuit diagram nya for pc speaker lang po. Ayaw ko po gumamit ng ic mas mura kc kung mga transistor lang ang gagamitin. Ayaw ko bumili nung ready made na kc babaklasin ko rin at ikakabit sa pc arcade. Tapus bili na lang me ng ,mga speaker din na mura.

Philippine Electronics Forum · « **on:** January 10, 2011, 11:23:10 AM »

edtechph · « **Reply #1 on:** January 18, 2011, 09:28:36 PM »

gaanu ba kalaki yung pc arcade na yan masyadong mahina yata pag yung sa pc speaker amp. meron mga kit siguro 300 plus lang

Philippine Electronics Forum · « **Reply #1 on:** January 18, 2011, 09:28:36 PM »

ECM · « **Reply #2 on:** November 22, 2011, 06:46:14 PM »

cheap at low budyet try mo amplifier na TEA2025 2ch pwede rin na briged tamang tama lang sa arcade machine eto un specs:

Stereo per channel
VCC=9V; RL=4 ohm/3W
VCC=9V; RL=8 ohm/2W
Bridge Application
VCC=9V; RL=8 ohm/5W
VCC=9V; RL=4 ohm/8W
Supply Voltage min = DC3v @ 500mA
Supply Voltage max = DC12v @ 500mA
Supply Voltage recommended = DC9v @500mA

25pesos lang yung ic TEA2025 siguro gastos ka lahat mga kulang 100pesos swak yan sa 10w 4" speaker

Philippine Electronics Forum · « **Reply #2 on:** November 22, 2011, 06:46:14 PM »

♪ ♫ ♫ ♪ ♪ ♪ ♫ ♫ ♫ · « **Reply #3 on:** November 22, 2011, 07:39:46 PM »

Philippine Electronics Forum · « **Reply #3 on:** November 22, 2011, 07:39:46 PM »

DJFEL · « **Reply #4 on:** November 22, 2011, 08:27:41 PM »

search mo lang kay paring google...

Philippine Electronics Forum · « **Reply #4 on:** November 22, 2011, 08:27:41 PM »

sympleguy2u™ · « **Reply #5 on:** November 22, 2011, 08:39:50 PM »

Quote from: jfar223344 on January 10, 2011, 11:23:10 AM

Mga master sino po meron sa inyo transistorize lang po na circuit diagram nya for pc speaker lang po. Ayaw ko po gumamit ng ic mas mura kc kung mga transistor lang ang gagamitin. Ayaw ko bumili nung ready made na kc babaklasin ko rin at ikakabit sa pc arcade. Tapus bili na lang me ng ,mga speaker din na mura.

http://www.redcircuits.com/Page80.htm

Disabled · « **Reply #6 on:** November 22, 2011, 09:00:41 PM »

^

Class A pang arcade..

rdpzycho · « **Reply #7 on:** November 22, 2011, 09:13:28 PM »

pwede rin 'yung TDA2822M (8 pins), 15 pesos lang, stereo na rin, 1W nga lang. http://www.newportelec.com/ic_t.html 'yan 'yung typical na gamit sa mga China PC speakers.

sa totoo lang, medyo mas mapapamahal ka pa sa transistorized dahil marami ng murang IC ngayon na low power.

konti lang ang nakaka-alam nito pero pwede rin ang TL431, medyo maliit nga lang din ang output power, though ok siya kapag ok 'yung speaker at transformer ang coupling. nagamit ko na 'to as PC speakers at medyo ok naman ang performance.

zrehtiek/keitherz · « **Reply #8 on:** November 22, 2011, 09:18:33 PM »

tl431 regulator? lupet +1

rdpzycho · « **Reply #9 on:** November 22, 2011, 09:29:39 PM »

OT:

uy sakto oh:

yup, internally kasi opamp din siya connected sa open collector transistor with 2.5V ref sa inverting input (nung opamp, as a whole, siya na 'yung non-inverting dahil inverting ulit 'yung output transistor).

Disabled · « **Reply #10 on:** November 22, 2011, 10:19:44 PM »

zrehtiek/keitherz · « **Reply #11 on:** November 22, 2011, 10:28:55 PM »

magic

Philippine Electronics Forum · « **Reply #11 on:** November 22, 2011, 10:28:55 PM »

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