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  2. Breakdown voltage - Wikipedia

    en.wikipedia.org/wiki/Breakdown_voltage

    Rectifier diodes (semiconductor or tube/valve) may have several voltage ratings, such as the peak inverse voltage (PIV) across the diode, and the maximum RMS input voltage to the rectifier circuit (which will be much less). Many small-signal transistors need to have any breakdown currents limited to much lower values to avoid excessive heating.

  3. Diode–transistor logic - Wikipedia

    en.wikipedia.org/wiki/Diodetransistor_logic

    Diodetransistor logic (DTL) is a class of digital circuits that is the direct ancestor of transistortransistor logic. It is called so because the logic gating functions AND and OR are performed by diode logic , while logical inversion (NOT) and amplification (providing signal restoration) is performed by a transistor (in contrast with ...

  4. Diode logic - Wikipedia

    en.wikipedia.org/wiki/Diode_logic

    Diode circuit implementing AND in active-high logic. Note: in analog implementation exact output currents will be different from +5V supply. This circuit mirrors the previous gate: the diodes are reversed so that each input connects to the cathode of a diode and all anodes are connected together to the output, which has a pull-up resistor.

  5. Contact resistance - Wikipedia

    en.wikipedia.org/wiki/Contact_resistance

    For experimental characterization, a distinction must be made between contact resistance evaluation in two-electrode systems (for example, diodes) and three-electrode systems (for example, transistors). In two-electrode systems, specific contact resistivity is experimentally defined as the slope of the I–V curve at V = 0:

  6. Reference designator - Wikipedia

    en.wikipedia.org/wiki/Reference_designator

    Bridge rectifier (four diodes in a package) often changed to "D" for diode BT, BAT: Battery or battery holder: often shortened to "B" C: Capacitor: CB: Circuit breaker: CN: Capacitor network: may be simplified to "C" for capacitor D, CR: Diode (all types, including LED), thyristor "D" is preferred for various types of diodes DL: Delay line: DN ...

  7. Transistor tester - Wikipedia

    en.wikipedia.org/wiki/Transistor_tester

    A circuit tester is used to check whether a transistor which has previously been performing properly in a circuit is still operational. The transistor's ability to "amplify" is taken as a rough index of its performance. This type of tester indicates to a technician whether the transistor is dead or still operative. The advantage of this tester ...

  8. Transistor diode model - Wikipedia

    en.wikipedia.org/wiki/Transistor_diode_model

    In a diode model two diodes are connected back-to-back to make a PNP or NPN bipolar junction transistor (BJT) equivalent. This model is theoretical and qualitative. This model is theoretical and qualitative.

  9. Curve tracer - Wikipedia

    en.wikipedia.org/wiki/Curve_tracer

    The discontinuity caused by negative resistance devices (such as tunnel diodes) can also be seen. This is a method for finding electrically damaged pins on integrated circuit devices. [2] For three-terminal devices (such as transistors) a connection to the control terminal of the device being tested is used, such as the Base or Gate terminal ...

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