Comments on: A Guide for Building TDA2003 Bridged and Stereo Amplifiers Raspberry Pi, Arduino, and DIY Electronics Projects and Tutorials Wed, 21 Feb 2018 20:02:47 +0000 hourly 1 By: Anirvan Thu, 01 Feb 2018 13:18:18 +0000 How much maximum output can tda2003 give in reality if built using the components given in test circuit ?

I have heard that no amplifier can give it’s full output as mentioned in datasheets so I wanted to know

By: Frits Sat, 28 Oct 2017 11:12:04 +0000 Hi,

Electronic circuits is a total new hoby for me and I found this site and it is a good start.for me.
I am for several weeks ordering the parts from the partlist and they are finally at home.
Now I did the final check befor starting solder the bridged amplifier.
I do not mean it critacal but I see some differences in the pictures from the amplifier relative to the PCB before soldering.
There is part missing namely: C5 47 nF Xicon Polystyrene and I am wondering when it is added? And when you order it by Mouser from the partlist it is an 4.7nF a diffent value. For me (I am not an electrician) it is very confusing. Mabey you can say something about this point before I solder. I wonder if it is possible to replace this capitator for a (M) KP capitator with the same value?

By: Niklas Fri, 04 Aug 2017 19:55:16 +0000 I have a question about the bridged Amp: where do I need to place my potentiometer, in order to be able to adjust the volume? and what value does it need to have if my input source has a maximum voltage of 2Vrms?

By: Eva Finch Thu, 27 Jul 2017 15:32:21 +0000 AWESOME! Post. It gives me a clear conception about BRIDGED AND STEREO AMPLIFIERS.
Thanks for sharing.

By: Sajjad Sat, 15 Jul 2017 14:25:02 +0000 Hi, Thank you for your useful information
can I use the LM380 instead of TDA2003 in the above circuit?

By: sy do Fri, 14 Apr 2017 14:08:25 +0000 Does any circuit do this instead of using “dual gang potentiometer”?

By: Circuit Basics Thu, 13 Apr 2017 17:26:42 +0000 Hi Sy Do,

Yes, you’re right, to adjust the volume you need to put a variable resistor before C1. If your’re building a stereo amp though, you want the volumes to be adjusted equally on both channels without having two separate potentiometers. For that you can use a “dual gang potentiometer” which is basically two potentiometers controlled by the same knob. Here’s an example of one:

By: Sy Do Thu, 13 Apr 2017 05:04:11 +0000 Hello,
I see your project very interesting.
I like this.
I have the questions for this project:
1. I added 2 variable resistors 10k before the capacitors C1 and C2 to adjust volume for the left channel and the right channel. Is that right?
2. If I right, How to use only one variable resistor for adjusting the volume on 2 channels?

Sy Do