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[Solved] tea-machine and want to be informed by a sound alert whenever heating the water

114 3
  • Level 2  
    Hi There,

    I have a tea-machine and I want to be informed by a sound alert whenever it becomes heating the water, in order to go by the tea-machine to cut the power off after hearing the sound. I want to design a circuit without touching inside the machine. I only want to use the electromagnetic field that produced by the mains cable (220 VAC). I think this is possible by using a sensor like an ampermeter coil as seen in the picture below. Is it true?

    Would anyone please help me?

    tea-machine and want to be informed by a sound alert whenever heating the water
  • Relpol przekaźniki
  • Level 1  
    Hola ese sistema no funcionaria pues se activa siempre al conectar la maquina puedo diseñarte un circuito que se activaria cuando llegue a la temperatura deseada con posibilidad de desconectar y volver a conectar cuando baje la temperatura
    si te interesa me respondes
    saludos
  • Relpol przekaźniki
  • Level 2  
    I am triyng to solve by using CT1202-RC current sensing coil
  • Level 2  
    I used a current sensing coil, a redresor, an optocoupler, and a relay. It is OK