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  2. RC circuit - Wikipedia

    en.wikipedia.org/wiki/RC_circuit

    A resistor–capacitor circuit (RC circuit), or RC filter or RC network, is an electric circuit composed of resistors and capacitors. It may be driven by a voltage or current source and these will produce different responses. A first order RC circuit is composed of one resistor and one capacitor and is the simplest type of RC circuit.

  3. RC oscillator - Wikipedia

    en.wikipedia.org/wiki/RC_oscillator

    Another common design is the "Twin-T" oscillator as it uses two "T" RC circuits operated in parallel. One circuit is an R-C-R "T" which acts as a low-pass filter. The second circuit is a C-R-C "T" which operates as a high-pass filter. Together, these circuits form a bridge which is tuned at the desired frequency of oscillation.

  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. 555 timer IC - Wikipedia

    en.wikipedia.org/wiki/555_timer_IC

    An RC circuit sets the output pulse's duration as the time in seconds it takes to charge C to 2 ⁄ 3 V CC: [16] = ⁡ (), where is the resistance in ohms, is the capacitance in farads, ⁡ is the natural log of 3 constant.

  6. Electronic speed control - Wikipedia

    en.wikipedia.org/wiki/Electronic_speed_control

    Electronic speed controls for model RC vehicles may incorporate a battery eliminator circuit to regulate voltage for the receiver, removing the need for separate receiver batteries. The regulator may be linear or switched mode. ESCs, in a broader sense, are PWM controllers for electric motors. The ESC generally accepts a nominal 50 Hz PWM servo ...

  7. Radio control - Wikipedia

    en.wikipedia.org/wiki/Radio_control

    Industrial remote controls work differently from most consumer products. When the receiver receives the radio signal which the transmitter sent, it checks it so that it is the correct frequency and that any security codes match. Once the verification is complete, the receiver sends an instruction to a relay which is activated. The relay ...

  8. How do certificates of deposit work? Understanding CDs ... - AOL

    www.aol.com/finance/how-do-cds-work-220139365.html

    Brokerage firms work with a network of banks and credit unions to offer a wide variety of CD types and terms. And these firms can often negotiate higher interest rates due to the volume of CDs ...

  9. RC time constant - Wikipedia

    en.wikipedia.org/wiki/RC_time_constant

    The RC time constant, denoted τ (lowercase tau), the time constant (in seconds) of a resistor–capacitor circuit (RC circuit), is equal to the product of the circuit resistance (in ohms) and the circuit capacitance (in farads):