Question
A class of these circuit elements called transferred electron devices are used in oscillators to produce microwaves. Quantum tunneling allows a class of these devices named for Leo Esaki (“eh-SAH-key”) to exhibit negative resistance. Four of these devices are arranged in a diamond shape in a bridge rectifier. These devices have an exponential I-V (“eye-vee”) relationship according to the Shockley equation. Past the breakdown voltage, these devices can conduct in both directions. On circuit diagrams, these devices are represented by a triangle touching a line. For 10 points, name these circuit elements that only let current flow in one direction and come in a “light-emitting” type. ■END■
ANSWER: diodes [accept light-emitting diodes or Gunn diodes or Esaki diodes; prompt on LEDs]
<Physics>
= Average correct buzz position
Summary
2024 ACF Fall at Cornell | fall | Y | 9 | 78% | 0% | 44% | 76.00 |
2024 ACF Fall at Ohio State | fall | Y | 8 | 75% | 0% | 50% | 72.67 |
2024 ACF Fall at Washington | fall | Y | 6 | 100% | 0% | 33% | 74.00 |
2024 ACF Fall at Georgia | fall | Y | 10 | 100% | 0% | 60% | 80.70 |
2024 ACF Fall at North Carolina | fall | Y | 9 | 78% | 0% | 56% | 95.43 |
2024 ACF Fall at Claremont Colleges | fall | Y | 5 | 100% | 0% | 40% | 67.80 |
2024 ACF Fall at Rutgers | fall | Y | 8 | 100% | 0% | 50% | 79.38 |
2024 ACF Fall at Rutgers | fall | Y | 8 | 88% | 0% | 50% | 72.57 |
2024 ACF Fall at Illinois | fall | Y | 9 | 89% | 0% | 44% | 49.38 |
Buzzes
Player | Team | Opponent | Buzz Position | Value |
---|---|---|---|---|
Jason Qin (DII) | Columbia J (DII) | Fordham A | 29 | 10 |
Zaid Asif (DII) | NYU A (UG) | Penn B (DII) | 30 | -5 |
Derek Chen (UG) | Columbia A (UG) | Penn A (DII) | 32 | 10 |
Lucas Shedlock (UG) | Princeton A (UG) | NYU B | 33 | 10 |
Neilesh Shroti (UG) | Columbia B | Columbia A (UG) | 40 | -5 |
Jason Lee (DII) | Rutgers A (UG) | Columbia B | 42 | -5 |
Sidhant Chaliha (DII) | Princeton A (UG) | Maryland B (DII) | 44 | -5 |
Vinayak Singh Bhadoriya | NYU B | Bard A (UG) | 46 | -5 |
Ishan Joshi (DII) | Rutgers B | Rowan A (DII) | 48 | 10 |
Vincent Zhang (DII) | Penn A (DII) | Fordham A | 49 | 10 |
Zaid Asif (DII) | NYU A (UG) | Maryland A (DII) | 49 | -5 |
Daniel Craig | Rutgers B | Lehigh B (DII) | 53 | 10 |
Kevin Liu (DII) | Maryland B (DII) | Lehigh B (DII) | 67 | -5 |
Leonard Castine (DII) | Penn B (DII) | Rutgers A (UG) | 71 | -5 |
Steven McPhillimey (UG) | Lehigh A (UG) | Bard A (UG) | 86 | 10 |
Leonard Castine (DII) | Penn B (DII) | NYU A (UG) | 89 | 10 |
Rohit Chintala (DII) | Maryland B (DII) | Princeton A (UG) | 97 | 10 |
Claire Wilson (UG) | Lehigh A (UG) | Rowan A (DII) | 104 | 10 |
Jack Stuhlman (DII) | Lehigh B (DII) | Maryland B (DII) | 104 | 10 |
Andrew Yang | Columbia B | Rutgers A (UG) | 104 | 10 |
Olin Bose (DII) | Columbia A (UG) | Columbia B | 105 | 10 |
Andy Yu (DII) | Maryland A (DII) | NYU A (UG) | 105 | 10 |
Jason Lee (DII) | Rutgers A (UG) | Penn B (DII) | 105 | 10 |