Sine Wave Generator - WA-9867



The Sine Wave Generator is an excellent tool for generating waves with speakers or wave drivers. It allows both the frequency (1-800 Hz) and amplitude of the sine wave output to be varied. Both fine and coarse frequency controls are included and the digital display features a 0.1 Hz resolution. In addition, the generator can "learn" the fundamental frequency for a particular configuration. Students can observe the quantum nature of standing wave patterns as the Sine Wave Generator jumps from one resonant frequency to the next.

Typical Applications

  • Wave Patterns in Strings
  • Resonant Frequencies in Air


  • Custom Plastic Case -- Designed to withstand student use; includes angled rubber feet for ease of use and rear rod clamp for additional mounting options. Cases are also stackable for easy storage.
  • Digital Display -- Frequency is displayed with 0.1 Hz resolution using red LEDs.
  • Frequency Adjustment -- Adjust the frequency of the output with either the fine (0.1 Hz) or coarse (1 Hz) knobs. The knobs include a "smart scan" feature so they change frequency more quickly when continuously turned.
  • Amplitude Adjustment -- Change the voltage of the sine wave signal.
  • "Learn" Frequency -- The Sine Wave Generator will store a frequency increment, then cycle through the selected frequency range by the increment automatically; very useful for resonance demonstrations or activities.
  • Built-in clamp can be used to mount the generator on a standard rod


  • Sine Wave Generator
  • Power Supply
  • How It Works

    Connect a device such as a speaker or string vibrator to the output jacks of the Sine Wave Generator with a pair of 4 mm banana patch cords (not included). 

    Adjust the amplitude of the output signal with the Amplitude knob. Set the output frequency with Coarse and Fine Frequency knobs. The knobs are mechanical encoders with 24 discrete detents, or clicks, per revolution. One slowly-turned click of the Coarse knob changes the frequency by 1.0 Hz, while a quick turn changes it by 4.0 Hz. One click of the Fine knob changes the frequency by 0.1 Hz. Up and Down Increment keys change the frequency by a default value of 100 Hz, but this value can be changed.


    • 1 to 800 Hz Adjustable in 0.1 Hz increments
    • DC coupled push-pull
    • Short-circuit protected
    • 0 to 10 V peak (approx.)
    • < 1 A into 8 Ω load
    • Up to 80 stored frequencies
    • 4 digit LED
    Input Power
    • 100-240 VAC, 50/60 Hz
    • 12 x 11 x 5 cm (not including separate power supply)

    Buying Guide