Page 30 - Electronics Starter Kit_EN
P. 30
Wiring diagram
6.4 Circuit Explanation
when you click on the push button it will light up the farther LED and storage the value of each
one, to understand how this circuit works let’s suppose that LED1 is already lighting up, so
indeed there is a small current come through R2 to the base of TR1 to make it in the saturation
mode, maybe you ask why does not the same thing happens with TR2; the current coming
through LED1 has two ways, through R1 which indeed a big value, or through TR1 which is
much easier because it is already in the saturation mode and connected directly to GND.
29
Electronics Starter Kit r.00 www.plusivo.com
