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Lesson 7: On / Off Touch Switch with Transistors
7.1 Overview
In this lesson we are going to make a switch using two touch probes one is ON and the other
one is OFF.
7.2 Components Required
1 x Breadboard Power Supply
1 x 9V Battery
1 x 9V Battery Connector
1 x Breadboard 830p
1 x 2N2907 PNP Transistor
3 x 2N2222 NPN Transistor
1 x 5mm red LED
1 x 220 Ω resistor
1 x 100 KΩ resistor
1 x 10 KΩ resistor
13 x M-M wires (Male to Male jumper wires)
7.3 Circuit
Schematic
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