Need Help with tda2009

[abuzarshaikh7]

Hello

i am making a project in which i will need four speakers

so i need four amplifiers.... i wrked with tda2822 but it gave be only one watt nd -20 db sound at the source

i need atleast 0 db sound so i asume that 10 watt will be required

i am planning to use tda2009 as its output power suffices my need to generate sound of approx 0 db

i need to know the powersupply design for providing power to all four tda2009.

 

[Tahmid]

You should find your information in the datasheet: www.datasheetcatalog.org/datasheets/208/378193_DS.pdf
Also take a look at this: www.kitsrus.com/pdf/k88.pdf

The specified range is 8V to 28V.

Hope this helps.
Tahmid.

 

[abuzarshaikh7]

i want to use 4 of these tda2009 for that how can i design the system i need help with that

what should be the current rating of transformer

 

[Tahmid]

For full power with 4 ohms speakers, use an 18V transformer rated at 6-8A.

 

[abuzarshaikh7]

can any body tell me how much db can 10 watt output generate if i connect it to a 4 ohm 50 watt rated speaker

- - - Updated - - -

will this rating run all the four tda2009 how much current does one tda2009 rquire

 

[Tahmid]

will this rating run all the four tda2009 how much current does one tda2009 rquire

Yes. According to the kitsrus project linked above (https://www.kitsrus.com/pdf/k88.pdf), one TDA2009 will require 1.5A to 2A with DC voltage > 24V.

 

[abuzarshaikh7]

thank you so much for the second link was really very help ful

You should find your information in the datasheet: www.datasheetcatalog.org/datasheets/208/378193_DS.pdf
Also take a look at this: www.kitsrus.com/pdf/k88.pdf

The specified range is 8V to 28V.

Hope this helps.
Tahmid.

- - - Updated - - -

thank you so much for the second link was really very help ful

You should find your information in the datasheet: www.datasheetcatalog.org/datasheets/208/378193_DS.pdf
Also take a look at this: www.kitsrus.com/pdf/k88.pdf

The specified range is 8V to 28V.

Hope this helps.
Tahmid.

 

[abuzarshaikh7]

Hello ,

I have made the circuit as depicted in the data sheet for bridge mode


what i observe is there is lot of unwanted noise after incresing the input to more than a certain level


how do i reduce this

also how to measure the output voltage and current of the tda2009a

i tried with digital multimeter but the voltage between the output pins starts at 28volts in AC and decreses to 1.2volts in AC after 5minits

can you explain y this happens

also current is zero According to multimeter

all i want to know is the output power