Holding current - thyristor , Electrical Engineering

Assignment Help:

Holding current

The holding  current is  the value  of on state  current  required  to maintain  conduction once the  device  the device has  fully timed  on and  the  gate current  has been removed. The  on state  current  must have  previously  exceeded the  latching current  Ti. To  turn  off A thyristor  the load current  must remain   below  Iii for sufficient time to tallow a return to the off state. This condition must be met  at the  highest operating junction temperature. Therefore it is the  minimum value of  anode current below which it must fall for taming off the thyristor. It  may also  define as the minimum anode current that must  be following  to keep  the device in a regenerative on state  condition. Below this holding  current  value the device  will return  to a blocking  state of  condition.


Related Discussions:- Holding current - thyristor

Find the net force experienced by a positive charge q, Q Two charges of equ...

Q Two charges of equalmagnitude 5µC but opposite sign are separated by a distance of 10 m. Find the net force experienced by a positive charge q = 2 µC that is placed midway betwee

Instruction size , Instruction size As we  have seen already  that eac...

Instruction size As we  have seen already  that each instruction has two parts Opcode ( Operation  Code) Which  tells  the types  of operation  to be  performed .

Compute the induced emf, Compute the induced emf: If a coil of 150 tur...

Compute the induced emf: If a coil of 150 turns is linked with a flux of 0.01 wb while carrying a current of 10 Amp, compute the inductance of coil. Now, if current is reverse

Mesh-current equation with controlled sources, Since a controlled source ac...

Since a controlled source acts at its terminals in the same manner as does an independent source, source conversion and application of KCL and KVL relations are treated identically

Determine the speed of the motor, Q. A 10-kW, 250-V dc shunt generator, hav...

Q. A 10-kW, 250-V dc shunt generator, having an armature resistance of 0.1and a field resistance of 250 , delivers full load at rated voltage and 800 r/min. The machine is now ru

Draw the logic diagram of the enabled d latch, Q. (a) Draw the logic diagra...

Q. (a) Draw the logic diagram of the enabled D latch using only NAND gates. (b) Complete the timing diagram of Figure (a) of theDlatchwhose block diagram and truth table are giv

3-phase 4 wire meters with ct and md, 3-Phase 4 Wire Meters with CT and MD ...

3-Phase 4 Wire Meters with CT and MD If load is commonly more than 50 A, CT operated meters should be used. It is to be remembered that CTs should be properly selected for acc

What is UNIVERSAL SERIAL BUS, What is USB? USB: The USB (UNIVERSAL SERI...

What is USB? USB: The USB (UNIVERSAL SERIAL BUS) is intended to join peripheral devices as keyboards, modems, a mouse and sound cards to the microprocessor by a serial data pat

Find the initial and final values of the armature current, Q. A 7.5-hp, 250...

Q. A 7.5-hp, 250-V, 1800-r/min shuntmotor, having a full-load line current of 26 A, is started with a four-point starter. The resistance of the armature circuit, including the inte

What is an interrupt, What is an interrupt? An interrupt is either a s...

What is an interrupt? An interrupt is either a software-generated CALL or hardware-generated CALL.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd