Exam 13: Thyristors

A gate voltage can turn a power FET on and off.

What is the schematic symbol shown in Figure 13-34(a)?

Reducing the supply voltage,interruption,and forced commutation are all methods of accomplishing what?

To avoid false triggering,what data sheet rating must not be exceeded?

A thyristor that is designed for easy opening with a reverse-biased trigger is the ________.

What device is replacing UJTs and PUTs in many of their applications?

A device that can be used to form a pulse generating circuit called a relaxation oscillator is

The ideal approximation of a four-layer diode is an open switch when cut off and a closed switch when saturateD.

The diac is sometimes called a

Commercially available SCRs have anode currents that extend as high as ________.

An SCR can be tested by using

The output of a comparator circuit is negative

The voltage gain of an IC comparator is typically about 100.

The angle between the start and end of conduction of an SCR is the

A transistor circuit that can remain in an open or closed state indefinitely is called

The diac is non-conducting until the

A four-layer device,also called a pnpn diode,that allows current flow in only one direction was originally called

A transistor latching circuit is opened by increasing the supply voltage (V_CC).

The only way to close a four-layer diode is by applying a trigger signal.

What type of thyristors are the diac and triac?