Ultrasonic generator with frequency modulation used in sonochemistry

The electronic generator includes an oscillator and a power stage working in tandem. It is supplied with an unfiltered rectified tension voltage. The signal applied to the transducer is completely modulated in amplitude, having a modulation sinusoidal frequency of 100 Hz. The adaptation transfer of power is realized by a voltage transformer, in this case the rate of voltages being 3.2. The input power was halved by a separate connection, at which one gets 0.707 of the maximum tension voltage. The output signal of the oscillator is frequency modulated with a white noise signal, the resulting signal having a frequency deviation less than 10% of the oscillation frequency. Frequency modulation by a white noise signal generates a broadband signal, very useful for the improvement of the efficiency of the chemical reaction. The carried experiments proved that the use of half of the transmitted power led to interesting results, too. So, for the case of the Weissler reaction of potassium iodine decomposition, at t...