En las news: ep2lpe$tvj$ snipped-for-privacy@aioe.org, el a Miguel Gimenez se le ocurrio tipear:
Miguel muchas gracias por responder, ayer buscando mas informacion sobre lo que deseo hacer, que es encender con una llamada encontre este circuito 'phone rang' indicator light From: snipped-for-privacy@chemteca.sdsu.edu (Massoud Ajami) This, will detect the ring signal, energize the relay which latches up, and the LED comes on and stays on till you push SW.
____ tip o--CC---RR----o-----DD----^ ^----o-----+ | | | SW | | | | | | | \-/ |- R|| B- LED Z C L|| ............ A | | |+ Y|| __.__ T+ R | | | +--o o---+ | | | | | | ring o------------o----------o-----o---------o----------------+
CC=.47 uF 200 V. capacitor RR= 3k (depends on relay) D = 200V diode ( > < direction od diodes) Z = 12 zener RLY= any small relay SW= normally closed switch K = relay's contacts BAT= 9 V. battery R = 500 ohm (for LED) C = some (10) uF capacitor
Components are not critical. It should latch on first ring, if not reduce RR. If it took too long to deenergize, reduce the C.
lo que no entiendo es de cuanto deberia ser el rele y de cuanto la resistencia de el, gracias como el sw esta cerrado lo omitire ya que solo pienso apagar el dispositivo con el boton de encendido de este, no con el circuito