This circuit operates at a frequency around 1 MHz, having been found in a technical documentation from 1997. However, the components used are still common, except the transducer, which must be of the appropriate type for this type of application, as it must support high power. L1 and L2 are formed by 35 turns of wire 28 in an adjustable ferrite core of 0.6 cm in diameter.

 


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