Calculadora de Temporizador 555
Calcula frecuencia, ciclo de trabajo y valores de componentes RC para el temporizador 555 en modo astable y monoestable.
Fórmula
Astable: f = 1.44/((R_A+2R_B)×C), Monostable: t = 1.1×R_A×C
Cómo Funciona
The 555 timer is an integrated circuit widely used in electronic timing and oscillation circuits. It operates based on comparator and flip-flop principles, capable of generating precise time delays and square wave signals. The device can function in astable (continuous oscillation), monostable (single pulse), and bistable modes, making it incredibly versatile for various electronic applications.
Ejemplo Resuelto
Calculate the frequency and duty cycle for an astable 555 timer circuit with R1 = 10kΩ, R2 = 15kΩ, and C = 0.1µF. Frequency calculation: f = 1.44 / [(R1 + 2R2) * C] = 1.44 / [(10,000 + 2*15,000) * 0.1e-6] = 480 Hz. Duty cycle calculation: Duty Cycle = (R1 + R2) / (R1 + 2R2) * 100% = (10,000 + 15,000) / (10,000 + 2*15,000) * 100% = 60%
Consejos Prácticos
- ✓Use high-quality capacitors with low tolerance for more precise timing
- ✓Consider temperature coefficients when designing critical timing circuits
- ✓Add decoupling capacitors near the power supply pins to reduce noise
- ✓Choose appropriate resistor and capacitor values to match desired frequency range
Errores Comunes
- ✗Ignoring parasitic capacitance in circuit design
- ✗Failing to account for component tolerances
- ✗Overlooking power supply voltage fluctuations
Preguntas Frecuentes
What is the typical supply voltage range for a 555 timer?
Most 555 timers operate between 4.5V to 16V, with some variants supporting wider ranges.
Can a 555 timer generate complex waveforms?
While primarily used for rectangular waves, creative circuit design can produce more complex signals by combining multiple stages or using additional components.
What are the primary applications of 555 timer circuits?
Common applications include pulse width modulation, tone generation, LED flashers, time delays, frequency division, and simple signal generators.
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