Doppeldiode
| Pentode
| Doppeldiode | |
| el. | two diode sections in a single envelop |
| microel. | duplex diode |
| Pentode | |
| phys. | five-electrode tube; pentode tube; three-grid valve |
| tech. | three-grid tube |
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| two diode sections in a single envelop | |||
| duplex diode | |||
| binode; double diode; twin diode; duodiode | |||
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Doppeldiode : 4 phrases in 2 subjects |
| Antennas and waveguides | 3 |
| Microelectronics | 1 |