Single Phase Full Wave Controlled Rectifier (or Converter): In case of Single Phase Full Wave Controlled Rectifier (or Converter) both positive and negative halves of ac supply are used and, therefore, the effective value of…
Single Phase Half Wave Controlled Rectifier with Resistive Load and Inductive Load: In a Single Phase Half Wave Controlled Rectifier only one SCR is used in the circuit. It is included in between the ac…
What is a Power Converter? Solid-state power converter are employed for obtaining the appropriate form of electrical energy such as direct current or adjustable-frequency alternating current (required to operate most electronic circuits and motor drives)…
UJT as Over Voltage Detector Circuit Diagram: UJT as Over Voltage Detector Circuit Diagram - A simple dc overvoltage detector circuit is given in Fig. 26.96. It operates on the fact that the device remains…
UJT Relaxation Oscillator - Circuit Diagram and its Workings: UJT Relaxation Oscillator - The relaxation oscillator shown in Fig. 26.94 (a) consists of UJT and a capacitor C which is charged through resistor RE when…
UJT Triggering of SCR Working Principle: UJT Triggering of SCR Working Principle - One common application of the unijunction transistor is the triggering of the other devices such as the SCR, triac etc. The basic…
Power BJT - Construction, Operation and its Characteristics: Power transistors are large-area devices. Because of differences in geometry and doping concentrations, their properties tend to vary from those of the small-signal devices. The structure of…
Light Activated SCR (LASCR) - Symbol, Construction and Operation: Light activated SCR is just an ordinary SCR except that it can also be light triggered. Most LASCRs also have a gate terminal for being triggered…
Silicon Controlled Switch (SCS) - Symbol, Operation, Advantages and Application: Silicon controlled switch (SCS), like the SCR, is a unilateral, four layer, three junction P-N-P-N silicon device with four electrodes namely cathode C, cathode gate…
Gate Controlled Switch (GCS) Circuit - Operation and Advantages: As mentioned earlier, low-current drop out is the normal way in which the SCR is turned off. Gate controlled switch is designed for easy opening with…
