Touch switch

Following circuit used for turn ON-OFF the electronic devices by touch
IC 555 can give 200mA as maximum current in output so if you want to run loads with more current you have to using a power transistor or a relay as switch.
By using relay you can switching 110-220v electric devices up to 10A.
You can run this circuit by 3 to 18v according to load voltage.
limitation of this circuit : it does not operate with mitten
You can find other touch switch circuits in following link:
https://engmousaalkaabi.blogspot.com/search/label/Touch%20switch

Parts list:
IC555
Resistor 1M
Battery

Note:
IC555 will burnt if you connect the battery incorrect, so pay attention to battery polarity.

Touch switch



 

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