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Old 11th January 2014, 01:24 PM   #1
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Default tda 2030 + power transistors

Help me, I need a schema to a power amplifier that uses the tda2030 and output transistors like tip41c and tip42c and split power supply.
The power amp need to have a power of 30W in a load of 8ohms.
I will be very grateful to those who could help me.
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Old 11th January 2014, 05:38 PM   #2
DUG is offline DUG  Canada
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30W into 8R is 44Vpp

The 2030 is 36V Absolute Max supply.

So single ended with this IC is out of the question...not going to work.

BTL (bridge tied load ) or bridge amplifier circuit will work but you will have to limit power dissipation with the supplies set at +/- 14V.

Page 9 of data sheet:

http://www.st.com/web/en/resource/te...CD00000128.pdf

You could use the tip41c and tip42c for regulators for the +/- 14V supplies.
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Old 11th January 2014, 05:43 PM   #3
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Default tda

Quote:
Originally Posted by paulopca View Post
Help me, I need a schema to a power amplifier that uses the tda2030 and output transistors like tip41c and tip42c and split power supply.
The power amp need to have a power of 30W in a load of 8ohms.
I will be very grateful to those who could help me.
I suggest you stay away from these i.c
All these TDA2... series are high distortion devices.
Try other modern i.c or even better an amplifier with discrete parts only.
This is my opinion.
Thimios.
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Old 11th January 2014, 05:56 PM   #4
DUG is offline DUG  Canada
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Quote:
Originally Posted by thimios View Post
...
All these TDA2... series are high distortion devices.
...

This is my opinion.
0.05% High distortion?

Oh yes, opinion.

My opinion: I can't tell 0.05% distortion.

Great amplifier series.

paulopca, enjoy building your amplifier.

Continue posting to this thread as you build...here you will get help to achieve your quest.

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Old 11th January 2014, 08:01 PM   #5
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Default tda2030 + power transistors

I found the circuit indicated in the link and did some modifications to make it how I want. Could someone verify that it is correct and fix please?

Original circuit
Transistor Amplifier Circuit with Diagram for 12 Watts

Modified circuit
Attached Images
File Type: jpg tda2030.jpg (376.4 KB, 312 views)
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Old 11th January 2014, 08:42 PM   #6
sreten is offline sreten  United Kingdom
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Hi,

In all respects just using a more powerful chipamp is way
better than using any garbage additions to a chipamp.

The circuit shown does nothing much the chip cannot
do and is all respects very poor and very clueless.

rgds, sreten.

Usually its an op-amp providing the very crude drive
to the output devices via its supply rails, its just poor.
Here is makes no sense whatsover, just very poor.
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Last edited by sreten; 11th January 2014 at 08:48 PM.
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Old 11th January 2014, 09:19 PM   #7
mjf is offline mjf  Austria
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......have a look into the datasheet of the tda2030a,there are examples.....
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Old 11th January 2014, 09:22 PM   #8
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Hi,




I thank you for your reply Sreten.
I know this is not a good amp but I would like to know if the circuit with the changes I made will work or not. And if there is any mistake I will be very grateful if someone can correct and explain why it was wrong.
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Old 11th January 2014, 09:32 PM   #9
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Thanks for your reply Mjf.
I had a look into the datasheet and did not find examples of what I need.
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Old 11th January 2014, 10:28 PM   #10
mjf is offline mjf  Austria
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....sorry,your circuit cannot work (output transistors connected wrong ,and so on).
there are examples -with output transistors added - in the datasheet (figure 12 and so.........)

HTTP 301 This page has been moved

Last edited by mjf; 11th January 2014 at 10:52 PM.
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