INDUCTION MAGNETIC RECEIVER WITH NOISE SUPPRESSION Russian patent published in 2000 - IPC

FIELD: geophysics, recording and measurement of variable magnetic fields while testing technical equipment to requirements of electromagnetic compatibility. SUBSTANCE: induction magnetic receiver with noise suppression has main short-circuited winding, main core and at least one compensation winding identical to main short-circuited winding and compensation core identical to main core. Compensation winding embraces compensation core, passes through central hole of closed magnetic circuit and carries load of induction coil and capacitor connected in series. Balancing magnetic circuit incorporate two identical balancing short-circuited windings one of which embraces main core and runs through central hole of balancing closed magnetic circuit and the other one embraces compensation core and goes through central hole of balancing closed magnetic circuit. EFFECT: effective suppression of noise harmonic signals whose frequencies lie in band of frequencies of received legitimate signals. 1 cl, 2 dwg