Power Electronics A to Z Blog

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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...

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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...

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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...

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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...