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  2. 555 timer IC - Wikipedia

    en.wikipedia.org/wiki/555_timer_IC

    where V diode is when the diode's "on" current is 1 ⁄ 2 of V CC /R 1 (which depends on the type of diode and can be found in datasheets or measured). When V diode is small relative to V cc , this charging is faster and approaches ln ⁡ ( 2 ) R 1 C {\textstyle \ln(2)\,R_{1}\,C} but is slower the closer V diode is to V cc :

  3. 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 ...

  4. File:Signetics NE555N.JPG - Wikipedia

    en.wikipedia.org/wiki/File:Signetics_NE555N.JPG

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  5. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    Portable Document Format (PDF), standardized as ISO 32000, is a file format developed by Adobe in 1992 to present documents, including text formatting and images, in a manner independent of application software, hardware, and operating systems.

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  7. 1N400x rectifier diode - Wikipedia

    en.wikipedia.org/wiki/1N400x_rectifier_diode

    These devices are widely used and recommended for general-purpose power-frequency rectifier use. [11] [12] They are commonly used as rectifiers in AC adapters of electrical appliances to convert AC to DC, [13] and are also used in other types of power converters, [2] or as freewheeling diodes to protect circuits from inductive loads.

  8. Datasheet - Wikipedia

    en.wikipedia.org/wiki/Datasheet

    Front page of a floppy disk controller data sheet (1979) A datasheet, data sheet, or spec sheet is a document that summarizes the performance and other characteristics of a product, machine, component (e.g., an electronic component), material, subsystem (e.g., a power supply), or software in sufficient detail that allows a buyer to understand what the product is and a design engineer to ...

  9. Hitachi HD44780 LCD controller - Wikipedia

    en.wikipedia.org/wiki/Hitachi_HD44780_LCD_controller

    The execution times listed in this table are based on an oscillator frequency of 270 kHz. The data sheet indicates that for a resistor of 91 kΩ at V CC =5 V the oscillator can vary between 190 kHz and 350 kHz resulting in wait times of 52.6 μs and 28.6 μs instead of 37 μs. If a display with the recommended 91 kΩ resistor is powered from 3. ...

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