A three terminal device that behaves roughly like scr

339. A three terminal device that
behaves roughly like SCR, except that it
can conduct current in either direction
when at ON.
340. What is the difference between a
triac and a silicon bilateral switch
(SBS)?
341. A triac can be triggered ON by the
application of a
342. Which are the three terminals of a
TRIAC?
343. What are the three terminals of a
triac?
B. mainterminal 1 (MT1), mainterminal
2 (MT2), and gate (G)
C. anode (A), cathode (K) and gate (G)
D. both A and B are acceptable
344. A silicon bilateral switch may be
considered as s small power triac, and
has three terminals namely,
B. mainterminal 1 (MT1), mainterminal
2 (MT2), and gate (G)
C. anode (A), cathode (K) and gate (G)

D. both A and B are acceptable
345. A thyristor that is very similar to an
SCR except that it has low voltage and
current ratings. It is very temperature
stable, and is therefore suitable to be
used as triggering
device.
346. Silicon unilateral switches (SUSs)
generally have a breakover voltage of 8
V, however, this value can be altered by
normally connecting a zener diode. How
is the diode installed?
347. A silicon unilateral switch (SUS)
has a forward breakover voltage of 8 V. a
zener diode is connected between its
gate and cathode terminals with the
diode‟s cathode at SUS‟s gate. If the
zener voltage is 3.9 V, what is the new
forward breakover voltage of the device?