Difference Between Thyristor and Thyratrons: Before the discovery of thyristors, thyratrons were used for inÂdustrial control, but now they have been replaced by the thyristors because of the following drawbacks…
Thyratron Working Principle: Thyratron is a hot cathode gas filled triode. Normally it is filled with a small amount of inert gas such as argon, hydrogen, neon or mercury vapour.…
Electron Tubes Articles: What is Vacuum Diode, Construction, Working and Applications: Construction of Vacuum Diode – Vacuum diode is the simplest form of the electron tube for the production and…
Ignitron Working Principle: Ignitron is a gaseous tube and consists of carbon anode, boron carbide ignitor tube and mercury pool cathode. It is a cold cathode tube and does not…
Electronic Control in Resistance Welding Process: As there are several factors, i.e., current, pressure, heat, time, to be considered, manual control does not yield good results in case of resistance…
Resistance Welding Machines - Overview and Circuit Diagram: Resistance welding machines incorporates a transformer, suitable electrodes for supplying current to the weld and arrangement for controlling the mechanical pressure, and…
Resistance Welding - Definition, Working Principle, Types, Advantages and Disadvantages: Definition - Resistance welding is that process in which a sufficiently strong electric current is sent through the two metal…
Electrical Power Engineering Multiple Choice Questions and Answers (MCQs) Part 5: 202. In resistance welding, the magnitude of current is controlled (a) by varying the primary voltage of the welding…