Abstract: Method of generating a biphasic triangular pulse using a device having a voltage bank with an adjustable voltage level; use of such pulse to induce a current flow in an individual's brain. A voltage control device of the device comprises one or more switches (e.g., IGBTs) and/or one or more inductors. Energy from the voltage bank is discharged into a magnetic coil of the device, with the voltage bank at a first voltage level. When the energy in the coil reaches a predetermined positive peak, the polarity of the voltage is reversed (i.e., the voltage level is set to a second voltage, which may be a negative equivalent of the first voltage level). When the voltage reaches a negative peak, the voltage level is returned to the first (positive) voltage level. The changing polarity results in a biphasic pulse, which may be unidirectional or bidirectional.

Abstract: Method of generating a unidirectional monophasic triangular pulse using a device having a voltage bank with an adjustable voltage level; use of such a pulse to induce a current flow in an individual's brain. A voltage control device of the device comprises one or more switches, such as IGBTs, and/or one or more inductors. Energy from the voltage bank is discharged into a magnetic coil of the device. When the energy in the coil reaches a predetermined peak level, the voltage of the voltage bank is rapidly changed from a first level to a second level, such that the majority of the energy in the coil is recovered while the voltage level is at the second level. In some embodiments, the first level is 5 times the second level. In some embodiments, the second level is 5 times the first level.

Abstract: Systems, methods, and devices relating to transcranial magnetic stimulation (TMS). A circuit having at least two inductors is used in a TMS device. A small inductor adjacent to the patient's head and a large inductor away from the patient is used. The inductors are coupled to the circuit using multiple semiconductor switching subsystems. The subsystems, when activated, couple the inductors to the circuit and the inductors act as a single inductance. When deactivated, the subsystems decouple the inductors from the circuit and each inductor individually recovers or dissipates/discharges energy stored within. Since each inductor dissipates energy separately from each other, a much shorter dissipation or recovery time is achieved in the inductor close to the patient's brain as compared to the larger inductor. While dissipating or discharging, the small inductor induces electric currents in the brain to thus achieve stimulation and elicit action potentials.

Abstract: Systems, methods, and devices relating to transcranial magnetic stimulation (TMS). A circuit having at least two inductors is used in a TMS device. A small inductor adjacent to the patient's head and a large inductor away from the patient is used. The inductors are coupled to the circuit using multiple semiconductor switching subsystems. The subsystems, when activated, couple the inductors to the circuit and the inductors act as a single inductance. When deactivated, the subsystems decouple the inductors from the circuit and each inductor individually recovers or dissipates/discharges energy stored within. Since each inductor dissipates energy separately from each other, a much shorter dissipation or recovery time is achieved in the inductor close to the patient's brain as compared to the larger inductor. While dissipating or discharging, the small inductor induces electric currents in the brain to thus achieve stimulation and elicit action potentials.