Tuesday, November 11, 2014
LV4700P bassed 4x24 watt car audio amplifier Diagram Circuit
This car audio amplifier electronic project is based on the LV47004P audio IC , specially designed for car audio applications . The LV4700P IC is manufactured by Sanyo Semiconductors and is a 4-channel BTL power amplifier that is developed for car audio system.
Pch DMOS in the upper side of the output stage and Nch DMOS in the lower side of the output stage are complimentary.
High power and high quality sound are realized by that.
This IC incorporate various functions like : standby switch, muting function, and various protection circuit ; necessary for car audio system. Also, the LV47004P audio IC has a self-diagnosis function.
This 4x24 watt car audio amplifier based on LV4700P circuit can operate from a 9 to 16 volts DC power supply circuit , but typically is recommended a 14.4 volt DC power supply .
The output power that can be provided by this car audio amplifier circuit is around 24 watt per channel with thd 10% , on a 4 ohms load . In same conditions this 4x24 watt car audio amplifier based on LV4700P can provide a maximum output power of 17 watt per channel with THD 1% .
As you can see in the schematic circuit , the design of this power amplifier project is very simple , requiring few external electronic parts .
By varying the value of input capacitor, low-frequency characteristic can be improved.
For pop noise prevention, it is recommended to use the muting function at the same time.
Please turn on the muting function simultaneously with power supply on when the amplifier is turned on. Next, turn off the muting function after the output DC potential stabilization. When the amplifier is turn off, turn off the power supply after turning on the muting function.
To prevent damage due to overheating process the LV47004P audio IC must be heatsinked .
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