Deepakkumar Yadav
Static VAR Compensation System The general arrangement of static VAR compensator is shown in Figure. VAR (Volt Ampere Reactive) is the unit for measuring the reactive power. VAR compensator is used to reduce the reactive power drawn from a transmission line. It shows that the static VAR compensator consists of TCRs (Thyristor Controlled Reactor) in … Read more
Servo Type AC Voltage Stabilizer Block diagram of Servo Type AC Voltage Stabilizer : The block diagram for the servo stabilizer is as shown in Figure. As seen from the Figure, it uses an ac servomotor which is mechanically coupled to the moving tap of an autotransformer. Operation of Servo Type AC Voltage Stabilizer : The sensing circuit will … Read more
Advantages, Disadvantages and Applications of Solid State Regulator Advantages of Solid State Regulator : Due to the incorporation of firing angle control, the output voltage regulation is better than that of the tap changing regulator. Its dynamic response is faster than that of the tap changing regulator. Disadvantages of Solid State Regulator : Poor input power factor due to … Read more
Relay Type or Tap Changing AC Voltage Stabilizer Block Diagram of Tap Changing AC Voltage Stabilizer : The block diagram of the tap changing regulator is as shown in figure. Operation of Tap Changing AC Voltage Stabilizer : As shown in Fig . 5.161, the primary winding of the transformer is divided into several taps. One end (A) of … Read more
AC Voltage Regulator (Stabilizer) Definition of AC Voltage Regulator (Stabilizer) : Stabilizer is a device that stabilizes or regulates the single phase or three phase ac supply, in a predecided voltage range. The voltage range is dependent on the application. AC supply is being used by almost all the industrial, control, biomedical applications. For their … Read more
Electronic Circuits used in Resistance Welding System There are many electronic control circuits used in the resistance welding process, they are as follows : The line contactor : The line contactor is basically an electronic switch. The line contactor connects and disconnects the primary winding of the welding transformer across the ac mains supply. The … Read more
Basic AC Resistance Welding System Description : The “line contactor” is basically a controlled switch which connects the ac mains voltage across the primary winding of the “welding transformer” only during the welding interval. It otherwise disconnects the mains from the primary. The “welding transformer” is a step down transformer which supplies a reduced (steps … Read more
Simple Battery Charger How can I make a 12 volt battery charger at home? What is battery charger circuit diagram? How does a battery charger circuit work? What is battery charging circuit? Circuit Diagram of Battery Charger : Figure A shows the circuit diagram for a simple battery charger using an SCR. The input transformer … Read more
Advantages and Disadvantages of Resistance Welding Advantages of Resistance Welding : The resistance welding has following advantages over the conventional welding : The welding time is extremely short, a few millisecond to a few seconds. Due to the use of controlled devices like thyristors precise heat control is possible to achieve. Quality of welding is improved to … Read more
Static or Solid State AC Voltage Stabilizer Block Diagram of Solid State AC Voltage Stabilizer : Solid state regulator can be of two types : Tap changing type Phase control type The block diagram is as shown in Figure A. The input output voltage waveforms are as shown in Figure B. Figure A Figure B Operation of Solid … Read more