Level shifters play critical roles in ultra low-voltage circuits and systems. a new low power level shifter (LS) is presented for robust logic voltage shifting from near/sub threshold to above threshold domain. The new circuit combines the multi threshold CMOS technique along with novel topological modifications to guarantee a wide voltage conversion range with limited static power and total en...

The current study sought to explore the impact of SFL-oriented register instruction on Iranian EFL learner’ writing performance with a central focus on their English proficiency level. As its secondary aim, the study delved deeply into the learners’ perception of the register-based instruction. To these ends, 50 intermediate and 50 advanced Iranian EFL learners were selected randomly and assign...

Current profile control by ac magnetic helicity injection is computationally investigated in a reversed field pinch ~RFP!. Three-dimensional resistive magnetohydrodynamics ~MHD! computation is employed to study the nonlinear MHD. During ac helicity injection, when toroidal and poloidal surface voltages are oscillated out of phase, the parallel electric field is maintained positive over a majori...

A lot of low voltage output applications require relatively high input voltage, e.g., 48 V, 100 V, etc., because high voltage is more efficient in distributing current. To minimize the power loss and protect the output load from possible over-voltage due to the failure of the semiconductor devices, a step-down isolation transformer is required in this type of low voltage power supply design. In...