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  2. Resonant-tunneling diode - Wikipedia

    en.wikipedia.org/wiki/Resonant-tunneling_diode

    A working mechanism of a resonant tunneling diode device and negative differential resistance in output characteristic. There is a negative resistance characteristic after the first current peak, due to a reduction of the first energy level below the source Fermi level with gate bias.

  3. Tunnel diode - Wikipedia

    en.wikipedia.org/wiki/Tunnel_diode

    The resonant-tunneling diode (RTD) has achieved some of the highest frequencies of any solid-state oscillator. [ 10 ] Another type of tunnel diode is a metal-insulator-insulator-metal (MIIM) diode, where an additional insulator layer allows " step tunneling " for more precise control of the diode. [ 11 ]

  4. Resistance thermometer - Wikipedia

    en.wikipedia.org/wiki/Resistance_thermometer

    Looking at the Wheatstone bridge circuit shown, the voltage drop on the lower left hand side is V_rtd + V_lead, and on the lower righthand side is V_R3 + V_lead, therefore the bridge voltage (V_b) is the difference, V_rtd − V_R3. The voltage drop due to the lead resistance has been cancelled out. This always applies if R1=R2, and R1, R2 ...

  5. Signal conditioning - Wikipedia

    en.wikipedia.org/wiki/Signal_conditioning

    Some sensors require external voltage or current source of excitation, These sensors are called active sensors. (E.g. a temperature sensor like a thermistor & RTD, a pressure sensor (piezo-resistive and capacitive), etc.). The stability and precision of the excitation signal directly relates to the sensor accuracy and stability.

  6. State and local governments could be a roadblock for some of ...

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    This is a bedrock principle of U.S. constitutional law." Public education State education officials are in the same boat when it comes to federal oversight, experts said.

  7. RTD - Wikipedia

    en.wikipedia.org/wiki/RTD

    RTD may refer to: Science and technology. Real-time data; Residence time distribution; Resonant-tunneling diode; Round-trip delay time, in telecommunications;

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  9. 25 Non-Traditional Thanksgiving Dinner Ideas That Aren't Meat ...

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    125 Inspirational Quotes to Motivate You for Work, Love, and Life. Related articles. AOL. The very best gifts for men, from $2 to over $100. AOL.

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