@▷ Delayed Off Light Switch | Diagram for Schematic

Delayed Off Light Switch

This the circuit delays light switch for AC line 220V Lamp. It can turn on -off lamp get with Sw OFF and SW ON. Besides can delay Off lamp get about 5 minute. By the circuit within use digital CMOS IC and Triac for control AC lamp replace Relay make this circuit has small-sized and good convenient have no something speak of Switch relay.

Rated for use with incadescent loads
This is an unusual design in that it uses plain metal gate CMOS logic instead of the usual PIC or a custom chip. The 22uF capacitor charges up during one half of the ac cycle, and supplies trigger current to the triac on both halves.
Link: http://www.members.shaw.ca/novotill/DelayedOffLightSwitch/index.htm

"Delayed Off Light Switch Search Tags"
Lighting, Electronic C