Power Amplifier

This is a very simple circuit power amplifier with IC LA4440. This circuit is a circuit the first time i learned to make a power amplifier. Power output 2 X 20 Watt with stereo speakers. Minimum Voltage 9 Volt and maximum voltage 24 V. The Circuit is also very easy to make. For novices , this circuit is suitable for use . The material is also readily available at electronics store.  See schematic below : The Speaker are matched with woofer speaker with impedance 4 Ohms. And voltage can be stabilized with IC 7812 but must be reinforced such us transistor.

See this circuit below: Datasheet IC TDA2004 Vcc                = 8-18 V Pout               = 2X 12 W RL                  = 2 Ohm Ft                   = 20hz - 20Khz Icco                = 65 mA Package         = SIP1-11 Manufactered = SGS-ATES Other IC TDA2004 , In this circuit you can use the following IC : A2000V A2005V TDA2005 TDA2005M MPC2005 Or you can call Persamaan IC TDA2004

20 Watts Power Amplifier circuit can be made ​​with an IC power amplifier LM1875. IC LM1875 is a single chip power amplifier from National. 20 watts audio amplifier with LM1875 is a low power amplifier with good quality to the room. To assemble the amplifier 20 watts with IC LM1875 component is not needed much support. 20 watts power amplifier using LM1875 IC in this article using symmetrical power supply. The virvuit of 20 watts audio power amplifier with IC LM1875 can be used as an experiment or first project for the reader, because it is simple and assembly of high success. Schematic Amplifier LM1875 LM1875 amplifier circuit with the above may result in the strengthening of the voltage up to 27dB for each channel (1 channel 1 IC). Strengthening the voltage can be changed by changing the feedback that is R5 R (on the circuit above using R 22K). But the tension reinforcement can not be less than 20 dB because it can cause oscillation. For the power supply or power supp