| Answer | Crossword Clue |
|---|---|
| pliotrons | PLIOTRON, a type of vacuum tube |
| pliotron | a type of vacuum tube |
| autodyne | type of heterodyne circuit containing a vacuum tube or transistor that acts simultaneously as a detector and oscillator |
| TRIODE | Type of vacuum tube |
| MAGNETRON | Type of vacuum tube |
| TETRODE | Type of vacuum tube |
| DIODE | Vacuum tube type |
| TRIODE | Vacuum-tube type |
| TRIODE | Vacuum tube type |
