Although the output of which was issued in this circuit only 35watts maximum, but th esound can be issued harsh , loud , and clear. If the voltage is fit and clean , how to assembly , components are good , the right speakers , this circuit will definitely make a sound that good to hear the ear.

See audio amplifier circuit  below :

Technical Information :

Vcc Max = 45V

Vcc TYP = 30V

Po            = 35W

RL           = 8Ohm

Icco TYP = 40mA

Icco Max = 80mA

I Max      = 10A

The schematic above is amplifier based on ic TA7211P or TA7212P , circuit above using OT transformer as a booster amplifier again. The amplifier suitable used on outside / field, because by using a transformer OT is identical to the PA amplifier.

Part List :

R  = 1K , 10R , 3K3

C  = 1uF , 10uF , 1n , 68u, 3u3, 2n2 x 2, 100u 

IC = TA 7211P / TA7212P

Technical information :

Max Vcc = 15 VDC

Min Vcc  = 4 VDC

Po            = 3,4 W

Rl            = 8 Ohm

Icco         = 16 mA

To supply the required voltage to the  amplifier circuit minimum of 7 Volt and a maximum of 24 volts . Incurred sizable ouput for amplifier ic 300 W maximum output.

Basiccally,this amplifier works with the IC, which is where ic is associated with several other components in the supply and use DC voltage, which corresponds to the needs of IC above course on the circuit schematic. For IC , stands intregated circuit used is ic LM379 which has a maximum 6 Watt stereo output. This IC manufactered by NS and with SDIP-14 package. While other components needed in the circuit schematic , you can see components of the list below.

• Requires very few external components
• Flexibility in use  stereo as well as mono BTL
• High output power (without bootstrap)
• Low offset voltage at output (important for BTL)
• Fixed gain
• Good ripple rejection
• Mute/stand-by switch
• Load dump protection
• A.C. and d.c. short-circuit-safe to ground and VP
• Thermally protected
• Reverse polarity safe
• Capability to handle high energy on outputs (VP = 0 V)
• No switch-on/switch-off plop
• Flexible leads
• Low thermal resistance
• Identical inputs (inverting and non-inverting)
• Compatible with TDA1516BQ (except gain).

Circuit diagram for mono amplifier TDA1518

Circuit diagram for stereo amplifier TDA1518

The above circuit is a circuit of booster amplifiers or amplifier end of a power amplifier circuit, Circuit over in the most important influence whether or not , and many more are affected in this final series.  Because the booster circuit is the amplifier end of the work was too heavy components causing the rapid component of the heat. If we are wrong then consequences will install components that can cause fatal damaged direct component , such us the installation of pin emiter, collector , and base everything must be correct. In the circuit above can strengthen booster amplifier with maximum work and everything is evenly split, what is it evenly split ? evenly split the point here is that all components can work with the same voltage and the heat evenly , this is because at each respetive base transistor were given the same constrains and same wattage resistor. And to maintain if the power output is too large then the resistor on Re will hamper so that the transistor is not easily broken.

Part List :
Rb=10R/1W
Re=0,5-1R/5W
Q1=Transistor power NPN such us 2N3055 , TIP3055,TIP120,TIP142,2SC2922 , etc.
Q2=Transistor Power PNP such us MJ2955 ,TIP2955,TIP125,TIP147,2SA1216, etc.
X1=Voltage connector (-)
X2=PNP Base connector
X3=Speaker connecor but also must be connected from the buffer
X4=NPN base connector
X5=Voltage connector (+)

This schematic have require minimum voltage at 1Volt and maximum volotage at 9 Volt. Maximum output power 2 X 0.6W.