Comments on: 10W amplifier using TDA2003.

By: seetharaman

seetharaman — Sun, 27 Nov 2011 20:44:49 +0000

Hi Nitin see the internal details in the following site
http://www.datasheetarchive.com/TDA2003-datasheet.html

By: nitin raj shukla

nitin raj shukla — Sun, 27 Nov 2011 08:00:32 +0000

i want to know about internal structure of tda2003

By: sugiman/the-g-man

sugiman/the-g-man — Sat, 06 Aug 2011 03:30:57 +0000

yaps thanks a lots,, ok, i’ll search the scheme by my self. thanks

By: seetharaman

seetharaman — Fri, 05 Aug 2011 17:13:55 +0000

Hi Sugiman use TDA2822M a 8pin IC the best choice for your requirement. it is stereo can work down to 1.8 volts and maximum up to 15volts.

By: sugiman/the-g-man

sugiman/the-g-man — Fri, 05 Aug 2011 06:19:59 +0000

at the real. i just want to build a mini music box like music angel. which the feature are, with 3.7v LiIon batt use nokia charger, 2 spk, power amp 2×3 watt st, play mp3 from MicroSD or USB flashdisc, and including a fm radio. the question, how can i build it with lower cost money? if Music Angel cost rate Rp 150.000, i want the ceaper then. thanks for help.

By: sugiman/the-g-man

sugiman/the-g-man — Fri, 05 Aug 2011 02:51:20 +0000

ya ya ya
but, still but here. but i need a small size, just 3″ diameter, and 17cm long. it was fully with a battery, 2 elco, and the power amp. i was try with 9v batt, but still same. ok,if i use 3 batt of 4v, now my charger just 7v. how again? thanks

By: seetharaman

seetharaman — Thu, 04 Aug 2011 16:14:42 +0000

Hi Sugiman the recommended operating voltage for 10watts power into 2 ohms speaker is 14.4volt DC. A minimum of 8volts is the amplifiers requirement. Use 3nos 4 volt 1 amp batteries in series as the power supply with 2200uF as decoupling capacitor. with 4 ohms speaker the output power will be around 5watts. you can use a dual cone elliptical speaker with a power handling capacity of 6watts at 4 ohms.

By: sugiman/the-g-man

sugiman/the-g-man — Thu, 04 Aug 2011 12:47:46 +0000

please help. i was make an amplifier with tda 2003, but for suply the energy, i use 4v/1A battery. the sound too much noise & cracked, if volume too max. i was try use C 4700uF/25v 2x on the suply, but it just get a few change. please tell me, how i increase it for a good sound & small size. i use 3″ spk. thanks