Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Audio Amplifier battery operated

Status
Not open for further replies.
E

ewandeur

Newbie level 5
Joined
Aug 30, 2006
Messages
10
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
Brazil - SP
Activity points
1,377
Hi,

I´m in need of an audio amplifier schematics, who can deliver at least 2W @9V battery to be used in a portable equipment.

Tkx
 

For which load ? (4 ohms, 8 ohms)
Try TDA7299 and TEA2025 and TDA1904

Obs: escreva um pouco em ingles senao o pessoal do forum reclama.

Com bateria dessas quadradas de 9V seu aparelho nao vai funcionar por muito tempo. Com alto falante de 8 ohms voce nao consegue 2W, com um de 4 ohms até vai conseguir, mas por pouco tempo (menos de 1h). Tente alguns amplificadores integrados tipo TDA7299 ou TEA2025

**broken link removed**
https://www.st.com/stonline/products/literature/ds/1523/tea2025.pdf
**broken link removed**
 

    E

    ewandeur

    Points: 2
    Helpful Answer Positive Rating
Thanks for your help, i've just pressed the button (helped me).

By the way, I will use this amplifier with a 4 ohm miniature tweeter to deliver "burst of sound" like in an car alarm, so I think the 9V battery will do the job.
 

Sorry but I think the battery's lifetime there isn't too long... Use an accu!
 

ewandeur said:
Thanks for your help, i've just pressed the button (helped me).

By the way, I will use this amplifier with a 4 ohm miniature tweeter to deliver "burst of sound" like in an car alarm, so I think the 9V battery will do the job.
Click to expand...

Hello

use an Piezo twetter to achive more db´s.


Regards
 

    E

    ewandeur

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top