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  2. 555 timer IC - Wikipedia

    en.wikipedia.org/wiki/555_timer_IC

    The 555 timer IC is an integrated circuit used in a variety of timer, delay, pulse generation, and oscillator applications. It is one of the most popular timing ICs due to its flexibility and price. Derivatives provide two (556) or four (558) timing circuits in one package. [2]

  3. File:555 Astable Diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:555_Astable_Diagram.svg

    File:555 Astable Diagram.svg. Size of this PNG preview of this SVG file: 275 × 250 pixels. Other resolutions: 264 × 240 pixels | 528 × 480 pixels | 845 × 768 pixels | 1,126 × 1,024 pixels | 2,253 × 2,048 pixels. This is a file from the Wikimedia Commons. Information from its description page there is shown below.

  4. File:NE555 Bloc Diagram.svg - Wikipedia

    en.wikipedia.org/wiki/File:NE555_Bloc_Diagram.svg

    NE555 Bloc Diagram.svg. English: The NE555 contains 24 bipolar transistors, two diodes and 15 resistors that form six functional blocks: Between the supply voltage VCC (+) and the ground GND (-) is a voltage divider consisting of three identical resistors which, when connected not from the outside, the two reference voltages ¹ / 3 VCC and ² ...

  5. Talk:555 timer IC/Archive 1 - Wikipedia

    en.wikipedia.org/wiki/Talk:555_timer_IC/Archive_1

    A pulse-position modulator can be constructed by applying a modulating signal to pin 5 of a 555 timer connected for astable operation. The output pulse position in time varies with the modulating signal, and hence the time delay is varied. In mid-2020, another editor removed the following subsections.

  6. Schmitt trigger - Wikipedia

    en.wikipedia.org/wiki/Schmitt_trigger

    T and − T are the switching thresholds, and M and − M are the output voltage levels. In electronics, a Schmitt trigger is a comparator circuit with hysteresis implemented by applying positive feedback to the noninverting input of a comparator or differential amplifier. It is an active circuit which converts an analog input signal to a ...

  7. Pulse-width modulation - Wikipedia

    en.wikipedia.org/wiki/Pulse-width_modulation

    t. e. Pulse-width modulation (PWM), also known as pulse-duration modulation (PDM) or pulse-length modulation (PLM), [1] is any method of representing a signal as a rectangular wave with a varying duty cycle (and for some methods also a varying period). PWM is useful for controlling the average power or amplitude delivered by an electrical signal.

  8. Duty cycle - Wikipedia

    en.wikipedia.org/wiki/Duty_cycle

    Duty cycle. A duty cycle or power cycle is the fraction of one period in which a signal or system is active. [1][2][3] Duty cycle is commonly expressed as a percentage or a ratio. A period is the time it takes for a signal to complete an on-and-off cycle. As a formula, a duty cycle (%) may be expressed as: Equally, a duty cycle (ratio) may be ...

  9. Clock signal - Wikipedia

    en.wikipedia.org/wiki/Clock_signal

    Clock signal. In electronics and especially synchronous digital circuits, a clock signal (historically also known as logic beat) [1] is an electronic logic signal (voltage or current) which oscillates between a high and a low state at a constant frequency and is used like a metronome to synchronize actions of digital circuits.