tetrode |
| noun
- A thermionic valve similar to a triode with the addition of a screen grid to protect the control grid
- A dynatron
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thermistor |
| noun
- a resistor whose resistance varies rapidly and predictably with temperature and as a result can be used to measure temperature.
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thyristor |
| noun - (physics) a semiconductor diode having an extra "gate" terminal to switch it on
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triode |
| noun
- A thermionic valve containing an anode, a cathode, and a control grid; small changes to the charge on the grid control the flow from cathode to anode which making amplification possible
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Tube |
| proper noun - (informal) The London Underground
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