Benefits Flexible signal generation tuned by supply voltage: output amplitude ranges from 4.2 Vpp to 11.4 Vpp depending on 5 V or 12 V input. Four selectable frequency bands reach from 1 Hz up to 200 kHz for versatile testing and experiments. LED indication provides quick status: output low lights the LED, output turns it off, and the LED blinks at low frequency to indicate activity. Low supply current at 5 V and higher current capability at 12 V to support higher amplitude needs without extra circuitry. Simple, integrated design using the N5555 main chip for compact signal generation. Key specifications Main chip: N5555 Input supply: DC 5–15 V Output amplitude: 4.2 Vpp (5 V input) to 11.4 Vpp (12 V input) Output frequency ranges (four selectable bands): 1 Hz–50 Hz; 50 Hz–1 kHz; 1 kHz–10 kHz; 10 kHz–200 kHz Output current: approximately 15 mA at 5 V supply; approximately 35 mA at 12 V supply Output amplitude depends on input voltage (higher input yields higher Vpp) LED indicator behavior: low output LED on; output LED off; low frequency LED flashes Operating and usage notes The device supports 5 V and 12 V supply options, with corresponding output amplitude and current capabilities. Amplitude varies with input voltage, so select the supply to meet your required Vpp. Use cases below illustrate practical applications where the specified frequency and amplitude ranges are appropriate. Use scenarios Scenario 1: Bench testing of microcontroller or sensor input stages by applying a known waveform within 4.2–11.4 Vpp and 1 Hz–200 kHz reference ranges. Scenario 2: Characterizing RC networks, filters, or amplification stages by sweeping frequency across the four bands while monitoring response at the generated amplitude. Scenario 3: Educational and lab demonstrations to show how signal amplitude scales with supply voltage and how frequency bands map to device behavior, using the LED indicator for quick visual feedback.