EEVblog #1208 - Circuit Analysis & Debugging

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: Schmitt Trigger Tutorial: Forum: #CircuitDesign #Analysis #Debugging Bitcoin Donations: 38y7DE8HEHNj8fGDtUr4PkCn9nWxiorvvy Litecoin: ML7oQokTwB38bgzzjLDbRV97HKAHuwRfHA Ethereum: 0x11AceA38DCA9DbFfB4F35f3F746af65F9dED28ce EEVblog Main Web Site: The 2nd EEVblog Channel: Support the EEVblog through Patreon! AliExpress Affiliate: Buy anything through that link and Dave gets a commission at no cost to you. Stuff I recommend: Donate With Bitcoin & Other Crypto Currencies! T-Shirts: Likecoin – Coins for Likes: @eevblog/dil9/hcq3 Теги: eevblog,video,circuit design,breadboard,digital counter,cmos logic,metastability,clock pulse,optocoupler,slew rate,ripple counter,bypass capacitor,datasheet,74hc logic,7400 series,ttl