Osciladores
R2026aUtilice estos ejemplos para aprender a implementar osciladores para generar señales electrónicas periódicas oscilantes.
Ejemplos destacados
Astable Oscillator
An implementation of an astable oscillator circuit. The circuit output voltage V2 oscillates in an unstable fashion between high and low states.
LC Oscillator Based on Colpitts Circuit
An implementation of a Colpitts oscillator circuit with a nominal frequency of 9MHz. The frequency of oscillation is given by 1/(2*pi*sqrt(L1*C1*C2/(C1+C2))). LC oscillators have good frequency selectivity due to higher Q levels than are achievable with RC oscillators.
Circuito PWM con un temporizador 555
Este ejemplo muestra una salida de modulación por ancho de pulso (PWM) implementada con un temporizador 555 en un modo astable. El ciclo de trabajo está establecido por un potenciómetro, P1. El potenciómetro se controla durante el tiempo de ejecución por medio de Duty Cycle Control Knob. El scope muestra la salida resultante del temporizador 555. Para finalizar la simulación, haga clic en el botón Stop.
Model Triangle Wave Generator Using Operational Amplifiers
Model a triangle wave generator circuit by using two Band-Limited Op-Amp blocks. The first stage of the circuit represents a comparator constructed from an op-amp. Two Diode blocks model the Zener diodes that limit the output of the comparator to plus or minus 5 V. These limits result in a square wave.
Voltage-Controlled Oscillator with PI Control
A voltage-controlled oscillator with feedback control to regulate the output voltage. The oscillation frequency is controlled by the reverse bias voltage applied to the to the varactor diode. The model shows how behavioral and component-level modeling can be mixed when designing a circuit. Provided that the variable trans-conductance device has a fast dynamic response relative to the oscillation frequency, the implementation details are not important. Similarly, the PI controller is in abstracted form, and could either be implemented with op-amps, or in software.
