| 1. | They come in two types : hot cathode and cold cathode.
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| 2. | Cold cathode discharge lamps use higher voltages than hot cathode ones.
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| 3. | Both hot cathode and cold cathode type devices are encountered.
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| 4. | Most ion gauges come in two types : hot cathode and cold cathode.
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| 5. | In the hot cathode version an electrically heated filament produces an electron beam.
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| 6. | In the hot cathode version, an electrically heated filament produces an electron beam.
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| 7. | This used a hot cathode that caused an electric current to flow in a vacuum.
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| 8. | There are two types of hot cathode.
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| 9. | From the 1920s to the 1960s, virtually every electronic device used hot cathode vacuum tubes.
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| 10. | Hot cathode gauges are accurate from 10 " 3 torr to 10 " 10 torr.
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