audio amplifier power descipation

Status
Not open for further replies.
P

ppdr123

Member level 3
Joined
Jul 24, 2010
Messages
61
Helped
4
Reputation
8
Reaction score
4
Trophy points
1,288
Location
Bhaarat
Activity points
1,619
hi everyone. i am using TDA7388A audio amplifier to run 4 speakers each having 4 OHMS impedance. my supply rail is of 16V max. can u suggest how to calculate the power descipation in audio amplifier.
thanks in advance.
 

see this website **broken link removed**
i think it may helpful
with regards
 

You are interested in power dissipation in the amplifier, so if you measure the current drawn from the power supply one can calculate power as V * I.
 

You can refer to Figure 10 in the datasheet, scaling the numbers with (16/13.2)², resulting in nearly 55 W maximum power dissipation with sine signals. The typical power dissipation playing music will be considerably lower according to the magnitude statistics.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…