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?