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  2. Crowbar (circuit) - Wikipedia

    en.wikipedia.org/wiki/Crowbar_(circuit)

    A crowbar circuit is an electrical circuit used for preventing an overvoltage or surge condition of a power supply unit from damaging the circuits attached to the power supply. It operates by putting a short circuit or low resistance path across the voltage output (V o ), like dropping a crowbar across the output terminals of the power supply.

  3. CMOS - Wikipedia

    en.wikipedia.org/wiki/CMOS

    CMOS inverter (a NOT logic gate). Complementary metal–oxide–semiconductor (CMOS, pronounced "sea-moss ", / s iː m ɑː s /, /-ɒ s /) is a type of metal–oxide–semiconductor field-effect transistor (MOSFET) fabrication process that uses complementary and symmetrical pairs of p-type and n-type MOSFETs for logic functions. [1]

  4. List of 4000-series integrated circuits - Wikipedia

    en.wikipedia.org/wiki/List_of_4000-series...

    The following is a list of CMOS 4000-series digital logic integrated circuits.In 1968, the original 4000-series was introduced by RCA.Although more recent parts are considerably faster, the 4000 devices operate over a wide power supply range (3V to 18V recommended range for "B" series) and are well suited to unregulated battery powered applications and interfacing with sensitive analogue ...

  5. Threshold voltage - Wikipedia

    en.wikipedia.org/wiki/Threshold_voltage

    In a given technology node, such as the 90-nm CMOS process, the threshold voltage depends on the choice of oxide and on oxide thickness. Using the body formulas above, V T N {\displaystyle V_{TN}} is directly proportional to γ {\displaystyle \gamma } , and t O X {\displaystyle t_{OX}} , which is the parameter for oxide thickness.

  6. Current limiting - Wikipedia

    en.wikipedia.org/wiki/Current_limiting

    When Q2 turns on, it removes the base current from Q1, thereby reducing the collector current of Q1, which is nearly the load current. Thus, R sens fixes the maximum current to a value given by 0.65/R sens. For example, if R sens = 0.33 Ω, the current is limited to about 2 A even if R load becomes a short (and V o becomes zero).

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  8. Rare police cases from 1904 found in thrift shop reveal ...

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    Staff at a thrift shop located in Wyoming found a police docket from 1904, which documented historical crimes. The discovery of the leather book is said to hold "a wealth of history."

  9. Logic family - Wikipedia

    en.wikipedia.org/wiki/Logic_family

    The first CMOS family of logic integrated circuits was introduced by RCA as CD4000 COS/MOS, the 4000 series, in 1968. Initially CMOS logic was slower than LS-TTL. However, because the logic thresholds of CMOS were proportional to the power supply voltage, CMOS devices were well-adapted to battery-operated systems with simple power supplies.