Electronic touch switch

This circuit is a electronic touch switch ( on/off ) activated by skin resistance of finger  . When the finger touch the on contact the a small current is delivered through skin to transistors to turn on the circuit .

The circuit remains on until the finger touch the off contact . This electronic touch switch  designed with transistors require a 6 volts power supply circuit . The electronic touch switch circuit project require few external components ( four transistors and four resistors ) and is very simple do build even for beginners .

Electronic touch switch schematic diagram