Patent ID: 8627511

Claim:
An electronic control device for a local probe with a piezoelectric resonator and preamplification and processing of its signals, the probe being configured for local measurement of physical properties of a sample in an environment with a particle beam directed towards the probe, wherein: an excitation voltage generated by excitation means is applied to the piezoelectric resonator through a first galvanic isolation transformer, and wherein a current for measurement of mechanical oscillations of the piezoelectric resonator is applied through a second galvanic isolation transformer to preamplification means on an output side; the first and second transformers have a sufficiently high primary/secondary breakdown voltage to resist an overvoltage generated by the particle beam; impedances of the transformer windings are sufficiently low so that electrical current generated in conducting elements by the electrical pulse induced by the particle beam is incapable of damaging a first stage of the preamplification means placed on the output side, and the excitation means placed on an input side.