Audio Frequency Oscillator (AF Oscillator) is a useful test instrument capable of generating sine, square & triangle waveforms at any required frequency, in switched decade sub-ranges.
The Audio Frequency Oscillator has output banana sockets; and a maximum wave output of 20 volts peak to peak approx, which may be adjusted by a amplitude control potentiometer.
The frequency of the signal source is set on a dial (1 to 11), along with a multiplier range switch (x1, x10, x100, x1K, x10K, x100K). It is widely used in industry and education institutions.