Fundamentals Friday
Dave answers a beginner forum question of why their 74HC390 based breadboard counter circuit does not work properly.
Let's get up to our armpits in datasheets and troubleshooting.
A two sentence forum response turned into a step-by-step 27min video investigation involving rise and fall times, setup and hold times, metatability, optocouplers, bypassing, open collectors, and breadboard connector traps for young players.

Power your chips through power pins: https://www.youtube.com/watch?v=2yFh7Vv0Paw
Schmitt Trigger Tutorial: https://www.youtube.com/watch?v=Ht48vv0rQYk

Forum: http://www.eevblog.com/forum/blog/eevblog-1208-circuit-analysis-debugging/

#CircuitDesign #Analysis #Debugging

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