Showing posts with label hex inverter. Show all posts
Showing posts with label hex inverter. Show all posts

Sunday, May 26, 2019

Crystal Testing Circuit



Crystal Testing Circuit 


Quick oscillator circuit, powering a 16MHz crystal. 





Powered by 2.4vDC:




Hex inverter pinout:




Breadboard circuit:



16MHz on the frequency meter:

It worked dead on with a 16MHz crystal, ok with slightly higher frequency crystals but was unstable at lower frequencies. Just need to adjust capacitors and resistors.

This uses a 74hc04 hex inverter IC chip.