RAMP AND PEDESTAL UJT-SCR CONTROL CIRCUIT
RAMP AND PEDESTAL UJT-SCR CONTROL CIRCUIT The circuit, shown below, uses a UJT to trigger an SCR. The UJT is …
Electrical Technology
OPERATING PRINCIPLE OF A GATE TURNOFF THYRISTOR GTO
OPERATING PRINCIPLE OF A GATE TURNOFF THYRISTOR GTO GTO being a monolithic p-n-p-n structure just like a thyristor its basic …
WHY USE RENEWABLE ENERGY SOURCES?
WHY USE RENEWABLE ENERGY SOURCES? The term alternative energy is referred to the energy produced in an environmentally friendly way …
NATURE OF POLE VOLTAGE WAVEFORMS OUTPUT BY PWM INVERTERS
NATURE OF POLE VOLTAGE WAVEFORMS OUTPUT BY PWM INVERTERS Unlike in square wave inverters, the switches of PWM inverters are …
What Is A Per Unit System? | Advantages of Per-Unit System in Power System Analysis
THE PER-UNIT SYSTEM In many engineering situations, it is useful to scale or normalize, dimensioned quantities. This is commonly done …
PULSE WIDTH MODULATED INVERTER
PULSE WIDTH MODULATED INVERTER Pulse width modulated (PWM) inverters are among the most used power-electronic circuits in practical applications. These …
THREE PHASE SYSTEMS | What is a Three Phase System? Definition
THREE PHASE SYSTEMS In a single-phase ac circuit, instantaneous power to a load is of a pulsating nature. Even at …
SKIN EFFECT | What is the skin effect?
SKIN EFFECT The effective resistance offered by a conductor to high frequencies is considerably greater than the ohmic resistance measured …
CLASSIFICATION OF POWER SYSTEM STABILITY
CLASSIFICATION OF POWER SYSTEM STABILITY A typical modern power system is a high-order multivariable process whose dynamic response is influenced …
INSULATING SOLIDS
INSULATING SOLIDS Solid insulating materials can be classified into two main categories: organic and inorganic. There are a large number …
