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The TDA2030 is single supply, see datasheet.
- Joined
- Nov 17, 2011
- Messages
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Right, but there is no need for a split supply. It will work properly from a single supply, which is what the op asked about.which shows that it can be used with a single or split rail supply
The datasheet for the old obsolete TDA2030 says its minimum supply is 12V when it barely works. Its spec's are with a 28V supply.
Your rectified 12V-0-12V produces +16V which can power the TDA2030 IC then its max output power is shown on a graph as 2.1W into an 8 ohm speaker.
Your rectified 12V-0-12V produces +16V which can power the TDA2030 IC then its max output power is shown on a graph as 2.1W into an 8 ohm speaker.
Hi,
But, it is not even outputting 2.1 w. it is outputting somewhere between 0.25 w and 0.5 w max.
Right, but there is no need for a split supply. It will work properly from a single supply, which is what the op asked about.
well that's debateable as he asked about a negative supply
It will work so much better on a split rail supply
and also to the OP @rahulb his 12V single rail is just way too low
As I just finished saying 12V single rail IS NOT suitable
Hi,
what is your suggestion then? should I use 24 V single supply or +12 and -12V dual supply?
Either of those two would be better than a single 12V
I need atleast 5 W of power
I told you that if you power the TDA2030 from the rectified 16V that feeds the 12V regulator then the output power will be 2.1W.
5W is only a little louder than 2W.
The datasheet shows 5W into 8 ohms at low distortion when the supply is 22V and is 6W when the supply is 24V.
Why not use a supply of 32V then the output power into 8 ohms at low distortion will be 12W.
5W is only a little louder than 2W.
The datasheet shows 5W into 8 ohms at low distortion when the supply is 22V and is 6W when the supply is 24V.
Why not use a supply of 32V then the output power into 8 ohms at low distortion will be 12W.
Really, linear audio amps are pretty much obsolete.
For $16 I got a class D amp that can produce an honest 25 W into 8 Ohms at 22V. I use it at 16V and get 16 W. It barely gets warm at that level.
And all of this using about 1/2 the power a linear amp would use.
Bob
For $16 I got a class D amp that can produce an honest 25 W into 8 Ohms at 22V. I use it at 16V and get 16 W. It barely gets warm at that level.
And all of this using about 1/2 the power a linear amp would use.
Bob
On another website today a Bluetooth speaker is using a TDA7492 modern class-D bridged stereo amplifier IC. It produces 25W per channel with low distortion into 8 ohm speakers when its supply is 25V. But it is in a surface-mount 36 pins case. Most Chinese companies sell it already assembled.
The problem with Class D amplifiers is, they come in surface mount package whereas I need a through hole package that I can solder with soldering iron. I don't have a blowing gun.
OK guys enough !
Regardless of it the TDA2030 is obsolete or not, the OP HAS one of them. Lets be constructive in helping him get the circuit going !
Dave
How big is the transformer you are using i.e. what is its current capability, how many amps. Also, can you measure the static output voltage with respect to 0V.
Just had a proper look at your schematic. Connect the 2030 power supply directly to the rectified and smoothed supply.
Just had a proper look at your schematic. Connect the 2030 power supply directly to the rectified and smoothed supply.
