Main features and technical details Main chip: N5555. Input DC 515V. Output amplitude ranges from 4.2 VPP (with 5 V input) up to 11.4 VPP (with 12 V input). Output frequency can be set in four ranges: 1 Hz50 Hz, 50 Hz1 kHz, 1 kHz10 kHz, and 10 kHz200 kHz. Output amplitude: 4.2 VPP to 11.4 VPP. Note that the output amplitude varies with input voltage. Maximum output current: 15 mA when powered from 5 V with VPP greater than 50%. If powered from 12 V with VPP greater than 50%, the device can deliver >= 35 mA. LED indicator: Output low causes the LED to turn on; output causes the LED to turn off. At low frequency, the LED will flash. Duty cycle control: The output duty cycle can be fine tuned. Duty cycle and frequency are not independently adjustable; adjusting the duty cycle will change the frequency. Use scenarios Benchtop signal generation for electronics prototyping and testing. Use the device to generate adjustable voltage swings and timing signals to drive microcontrollers, sensors, amplifiers, and measurement circuits in a lab or workshop. Signal integrity and timing checks for RC networks, filters, and ADC/DAC interfaces. The four frequency ranges and adjustable duty cycle allow you to simulate a variety of realworld waveforms and observe how circuits respond. Education and troubleshooting for electronics projects. The clear LED indication helps quickly assess output level and state, while the configurable amplitude and frequency support learning and debugging of timing and waveform behavior.