# Why turn-off time of a thyristor is greater than turn-on time?

turn off time is greater than turn n time why because on state is does not changed.

### What is the difference between a transistor and a thryistor?

One big difference is that Transistor consist of three layers pnp or npn, while thyristor hove four layers pnpn. As far as functioning is concern, in transistor whenever gate voltage is above threshold transistor is in on state. when you remove gate current transistor turns off. In case of thyristor, when you supply gate current, it is triggered and start conducting. Now even if you remove gate current it will be in on state. Thyristor…

### What are the two conditions necessary for a thyristor to begin to conduct?

There are more than two conditions that can make a thyristor conduct, but the general (functional) ones are: 1) positive voltage form anode to cathode, and 2) a positive voltage on the trigger input (referenced to the cathode) for a standard polarity thyristor. Other conditions can be: A) Anode-Cathode Voltage exceeding thyristor witholding voltage. B) Overtemperature of the thyristor chip C) Faulty thyristor (can be caused by overloads)

### How do you know if a fraction is more than half?

Double the numerator. If the answer is greater than the denominator then the fraction is greater than half. Double the numerator. If the answer is greater than the denominator then the fraction is greater than half. Double the numerator. If the answer is greater than the denominator then the fraction is greater than half. Double the numerator. If the answer is greater than the denominator then the fraction is greater than half.

### What is the difference between thermistor and thyristor?

saeid omran A thyristor, also known as a silicon controlled recitifier (SCR) is a uni-directional device. Under normal operating circumstances, it will pass current in one direction, only A thermistor is a type of resistor whose resistance varies significantly with temperature, more so than in standard resistors