Inverter 2

124

01:28:24

Inverter circuit with NPN transistors.  When switch is closed, QI, dumps to ground through the BLUE LED and is acting as a non-inverting buffer.  When the switch is opened, Q1 does not conduct and the inverter output turns on the RED LED controlled by Q2 which is acting as a switch.  The BLUE LED is simply to show current flow when the inverter has a logic zero output.  The true inverter output is the input to the base of Q2.

published 5 years ago

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