BLDC_Two_pole_brushless DC motor with_three-phase stator winding

BrushLess DC (BLDC) Motor Tutorial

BrushLess DC (BLDC) Motor  Introduction: The brushless DC motor(BLDC Motor) is actually a Permanent-Magnent Synchronous Machine ( It is not a DC motor). It is named like brushless DC motor, because its characteristics resemble to that...

UJT_VI_Characteristics

UJT UniJunction Transistor Tutorial

UJT - Introduction: The UniJunction Transistor is a three-terminal, two-layer, semiconductor device. The terminals are Emitter(E), Base-one(B1) and Base-two(B2). As it exhibits a negative resistance region, it is used as an oscillator and triggering...

SCR_Switching_Characteristics

Thyristor Switching Characteristics

SCR Switching Characteristics or Dynamic Characteristics: The switching characteristics are important particularly at high-frequency, to define the device velocity in changing from conduction state to blocking state and vice versa. Losses occurring in the...

Snubber_Circuit_SCR

Thyristor Protection

Thyristor Protection:- For  reliable operation of SCR, it should be operated within the specific ratings. SCRs are very delicate devices and so they must be protected against abnormal operating conditions. Various protection of SCR are...

IGBT_Switching_Characteristics

IGBT Switching Characteristics

IGBT Switching Characteristics The IGBT - Insulated Gate Bipolar Junction Transistor is a newly developed power semiconductor device which is almost replace the role of MOSFET in high voltage power electronics circuits. It contains...