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  2. Pulse (physics) - Wikipedia

    en.wikipedia.org/wiki/Pulse_(physics)

    The final green curve is the initial curve of figure 2. Figure 2: The reflection of the pulse. The successive positions of the pulse is drawn green, blue, black, red, green, blue. The initial green curve is the final curve of figure 1. A pulse will reflect off a free end and return with the same direction of displacement that it had before ...

  3. Rectangular function - Wikipedia

    en.wikipedia.org/wiki/Rectangular_function

    Plot of normalized ⁡ function (i.e. ⁡ ()) with its spectral frequency components.. The unitary Fourier transforms of the rectangular function are [2] ⁡ = ⁡ = ⁡ (), using ordinary frequency f, where is the normalized form [10] of the sinc function and ⁡ = ⁡ (/) / = ⁡ (/), using angular frequency , where is the unnormalized form of the sinc function.

  4. Servo control - Wikipedia

    en.wikipedia.org/wiki/Servo_control

    Servo and receiver connections A diagram showing typical PWM timing for a servomotor. Servo control is a method of controlling many types of RC/hobbyist servos by sending the servo a PWM (pulse-width modulation) signal, a series of repeating pulses of variable width where either the width of the pulse (most common modern hobby servos) or the duty cycle of a pulse train (less common today ...

  5. Counter Terrorism Response Unit - Wikipedia

    en.wikipedia.org/.../Counter_Terrorism_Response_Unit

    The CTRU was the first police unit in Asia dedicated to counterterrorism and hostage rescue patrols. [4] In June 2022, the police force publicly unveiled a grey-blue uniform for the CTRU. [5] In May 2024, the HKPF announced that the CTRU will absorb the manpower of the Railway Response Team (RRT). [6]

  6. Pulse (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Pulse_(signal_processing)

    The sinc pulse is of some significance in signal-processing theory but cannot be produced by a real generator for reasons of causality. In 2013, Nyquist pulses were produced in an effort to reduce the size of pulses in optical fibers, which enables them to be packed 10 times more closely together, yielding a corresponding 10-fold increase in ...

  7. Duty cycle - Wikipedia

    en.wikipedia.org/wiki/Duty_cycle

    For example, a signal (10101010) has 50% duty cycle, because the pulse remains high for 1/2 of the period or low for 1/2 of the period. Similarly, for pulse (10001000) the duty cycle will be 25% because the pulse remains high only for 1/4 of the period and remains low for 3/4 of the period. Electrical motors typically use less than a 100% duty ...

  8. Pulsed radiofrequency - Wikipedia

    en.wikipedia.org/wiki/Pulsed_radiofrequency

    The duty cycle for a pulsed radio frequency is the percent time the RF packet is on, 4.2% for this example ([0.042 ms × 1000 pulses divided by 1000 ms/s] × 100). The pulse packet form can be a square, triangle, sawtooth or sine wave. [1] In several applications of pulse radio frequency, such as radar, [2] times between pulses can be modulated.

  9. Pulse - Wikipedia

    en.wikipedia.org/wiki/Pulse

    In medicine, the pulse is the rhythmic throbbing of each artery in response to the cardiac cycle (heartbeat). [1] The pulse may be palpated in any place that allows an artery to be compressed near the surface of the body, such as at the neck (carotid artery), wrist (radial artery or ulnar artery), at the groin (femoral artery), behind the knee (popliteal artery), near the ankle joint ...