A Microcontroller-Based Signal Generator With High Output Current

Signal generators play a very important role in designing and testing circuits. They can supply various commonly used waveforms and can be designed using analog, digital, and Direct Digital Synthesis methods. Some signal generators have very low current output. In this paper, it is shown that a signal generator can be made using a cheap microcontroller board such as the Arduino Nano Klon V3.0 microcontroller. A power opamp TDA2030 is used to increase its output current. The signal generator can be operated up to 500 Hz Also, the signal generator can give an output current of up to 3 Amperes. The signal generator can be programmed to supply various common waveforms as well as any desired waveform considering its frequency limit.