Circuito de Relé con NE555

flux

0:36

Aquí te propongo un circuito simple basado en un temporizador 555 en configuración monoestable que activa un relé durante aproximadamente 1 segundo:
Componentes sugeridos
  1. NE555 Timer (U1)
  2. 2N2222 transistor (T1)
  3. Relay para activar la carga
  4. 1N4007 diodo de rueda libre
  5. Resistencias:
    • R1 = 10 kΩ (usada en el cálculo del tiempo de disparo)
    • R2 = 1 kΩ (para limitar la corriente en la base del transistor)
  6. Capacitores:
    • C1 = 100 µF (red de temporización; T ≈ 1.1·R1·C1 → ~1.1 seg)
    • Decoupling para el 555 (por ejemplo, C2 = 0.1 µF entre VCC y GND en U1, opcional)
Descripción del Funcionamiento
  • Cuando se active la entrada de disparo (un pulso bajo en el pin 2 del NE555), el 555 generará un pulso de salida (en el pin 3) de aproximadamente 1.1 segundos (según T = 1.1·R1·C1).
  • La salida del 555 se conecta, a través de la resistencia R2, a la base del transistor 2N2222, que al saturarse cierra y activa el relé.
  • El relé se conecta con su bobina entre VCC y el colector del transistor.
  • Se coloca el diodo 1N4007 en paralelo con la bobina del relé (cátodo a VCC y ánodo al colector) para proteger contra las sobretensiones cuando se desenergiza la bobina.
¿Te gustaría que te sugiera las conexiones específicas en el esquema de Flux?
375 days
1
jonnathan17

jonnathan17

Sí, por favor, muéstrame las conexiones detalladas para conectar el NE555, el 2N2222 y el relé en Flux.
375 days

flux

0:49

375 days
jonnathan17

jonnathan17

Sí, por favor, muéstrame las conexiones detalladas para conectar el NE555, el 2N2222 y el relé en Flux.
375 days

flux

0:48

375 days
jonnathan17

jonnathan17

@copilot quiero un circuito sencillo q se alimenta a 5v y me active un relay por 1 segundo usando un ne555
375 days

flux

0:58

375 days
1
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