A circuit for fast automatic search for resonance and tuning to it in a nuclear magnetometer

The description is presented of the principle of action of an automatic search-lock-track nuclear magnetometer circuit with a fast search for NMR. The schematic diagram of the magnetometer, in which the above-mentioned circuit is used, is given, as well as some characteristics of this magnetometer, such as: search time - 3 s, the absolute precision achievable in measuring the magnetic field in automatic mode - 0.001%, the range of the measured fields - up to 6 T (may be up to 10 T) with proton resonance, etc. 6 refs.; 2 figs