Logic Probe CMOS LM339 (CB783E)

Details

Published: Thursday, 18 February 2016 00:00

Written by Newton C. Braga

When the input voltage is higher than 2/3 of the power supply voltage the green LEDs glows. When the input voltage is 1/3 lower than the power supply voltage, the red LED glows. This circuit can be used to test logic circuits using CMOS technology. Power comes from the circuit under analisys.