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DIY audio amplifiers circuit diagram electronics projects

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 .

Electret microphone amplifier with TLV1018

Made in a tiny capsule the electret microphone amplifier can be used in various audio applications where space is critical.

Circuit Diagram: 
Electret microphone amplifier schematic circuit with TLV1018

Electret microphone amplifier circuit schematic

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.

Circuit Diagram: 
Electret microphone amplifier circuit schematic

TDA7241 20 watt car audio amplifier

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.

Circuit Diagram: 
TDA7241 20 watt car audio amplifier schematic circuit project

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