DIY audio amplifiers circuit diagram electronics projects and other related audio projects like : power amplifiers, audio systems, audio filters, vu meters, tone control, audio equalizers and more .
A simple microphone amplifier can be achieved using electronic scheme below. This amplifier uses a microphone to electret microphone capsule, but can be used can be used and dynamic microphones, which have a low resistance. This circuit requires a supply voltage between 5 and 10 volts, is recommended to use a supply voltage of 9 volts DC . Since the assembly has a very low power consumption (about 1.5m), installation can be powered using a 9 volt battery. The values for R1, C3 and R8 are for Philips LBC1055/00 electret capsule.
A very simple car audio power amplifier electronic project can be designed using the TDA7241 circuit manufactured by SGS Thomson . This car audio amplifier electronic project is designed in bridge mode configuration and will provide a maximum output power of 20 watts on a 4 ohms load. The maximum output power electronic project can be obtained using a 2 ohms load , in this case output power will be around 26 watts . Also you can use a 8 ohms load , but in this case , output power will be around 12 watts.
