Figure 2
From: OPM magnetorelaxometry in the presence of a DC bias field

Simplified schematic of coil driver: constant current source I1, high voltage MOSFET M1, TVS diode D1 and the coil for MNP excitation, modeled as RL-circuit (R1, L1)
From: OPM magnetorelaxometry in the presence of a DC bias field
Simplified schematic of coil driver: constant current source I1, high voltage MOSFET M1, TVS diode D1 and the coil for MNP excitation, modeled as RL-circuit (R1, L1)