El escenario
Designing a time-delayed relay for industrial machinery startup, where a delay is needed before energizing a load after power-on.
Qué hay en este dibujo
Lee las decisiones que hay detrás.
01
Choosing RC time constant for desired delay
02
Selecting transistor to handle relay coil current
When you need a simple hardwired timer delay to switch a load after a set interval, without microcontrollers or programmable timers.