Logic Probe


Posted on Jul 3, 2012

This logic probe uses a single CMOS IC and shows three logic conditions, High, Low and Pulsing. In addition if the probe input is neither hi or low (the high impedance state of tri-output logic ic`s) then no LED`s will light. Power from the logic probe is taken from the logic circuit under test; using a CMOS IC enables logic circuits to be tested using voltages from 3 to 15 volts.


Logic Probe
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Frequency divider
Light isolated solid state power relay circuits
20Mhz-clock-phase-lock
Cmos Pair 2-Mhz Crystal Oscillator
Simple Electromagnetic Field Detector Schematic
solar charger circuit by lm317
Current sense schematic question
555 Individual Pulse Width circuit
DS1820 thermometer circuit
Command receivers
Tone generator circuit
Salt bath resistance furnace temperature control circuit



Top