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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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
Bitcoin Donations: 38y7DE8HEHNj8fGDtUr4PkCn9nWxiorvvy
Litecoin: ML7oQokTwB38bgzzjLDbRV97HKAHuwRfHA
Ethereum: 0x11AceA38DCA9DbFfB4F35f3F746af65F9dED28ce
EEVblog Main Web Site: http://www.eevblog.com
The 2nd EEVblog Channel: http://www.youtube.com/EEVblog2
Support the EEVblog through Patreon!
http://www.patreon.com/eevblog
AliExpress Affiliate: http://s.click.aliexpress.com/e/c2LRpe8g
Buy anything through that link and Dave gets a commission at no cost to you.
Stuff I recommend:
https://kit.com/EEVblog/
Donate With Bitcoin & Other Crypto Currencies!
https://www.eevblog.com/crypto-currency/
T-Shirts: http://teespring.com/stores/eevblog
Likecoin – Coins for Likes: https://likecoin.pro/@eevblog/dil9/hcq3
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