Safe bedside lamp lighting switch

Closing the switch S. SCR vs through resistors R1, R2 and S trigger current and get opened, charged with H lamp that is eligible for the full-wave AC normal light; open the swi
Safe bedside lamp lighting switch - schematic

tch S. vs loses gate trigger current, when the AC zero crossing that is turned off, the lights go out. So turn off the lights and turn on the lights and ordinary bedside lamp switch is no different. But the connection bedside lamp switch S electric cord string with a high value resistor Rl and R2 isolation, even if the power cord is broken even children nibbled switch lead wire insulation foreskin, or switch into the mouth, will not cause electric shock.

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