Z-transform
Inverse Z-transform
Properties of the Z-transform
Introduction to Fourier Transform
100

How can you determine the value of V_FBO?

From the Datasheet

100

How many terminals does a GTO have? 

3

100

How many terminals does an SCS have?

4

100

How can you determine the value of the intrinsic stand-off ratio?

From the datasheet


200

What polarity of a pulse signal must be applied to the gate terminal of an SCR to turn it on? 

Positive pulse 

200

What is the primary difference between a GTO and an SCR in terms of its operation?

A GTO can be turned off through the gate terminal using a negative pulse.

200

What polarity of a pulse must be applied to the anode gate of an SCS to turn it off? 

A positive pulse. 

200
With regards to the construction, how is a PUT different to a UJT? 

The PUT is a  4-layer device, while the UJT is a "2-layer device".

300

 What polarity of a pulse must be applied to the gate of an SCR to turn it off? 

An SCR cannot be turned off through its gate terminal. 

300

What polarity of a pulse must be applied to the gate of a GTO to turn it off? 

A negative pulse. 

300
Can an SCS be turned on through its anode gate? 
Yes, by applying a negative pulse to the anode gate. 
300

How can you determine the value of the voltage required to turn on a UJT through the emitter terminal?

V_P = V_D +\eta(RB1/(RB1+RB2))

400

What happens to the characteristic curve of an SCR when a positive voltage is applied to its gate? 

The forward breakover voltage decreases and the graph seemingly shrinks. 

400

To turn off a GTO, what must be the relationship between the gate voltage and the cathode voltage? 

The voltage across the cathode must be greater than the voltage of the gate. 

400
Which of the following is incorrect? 

All of them are incorrect. 

400

Given a voltage source of 20V, what must be the value of the resistances connected to the anode terminal of a PUJT such that it would turn on at 8V? 

The intrinsic stand-off ratio must be 0.66, thus, RB1 must be 0.66 of the total resistance RBB. 
500

In the given circuit, when will SCR2 turn on? 

When the Zener diode turns  on which happens when the voltage of the battery reaches 11V. 

500

In the given circuit, what may cause the GTO to turn off? 

The voltage of the gate is equal to the voltage of the cathode. 

500

In the given circuit, when will the SCS turn on? 

When the value of the variable resistance R_s decreases and the voltage across the gate is becomes positive enough. 

500

Explain the characteristic curve of a UJT. 

Peak voltage

Valley voltage
Holding current

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