Digital Logic Timing Using Capacitors Episode 015

A unexpected error occurs in our LED lighting circuit due to digital logic signals changing too quickly. Arif Rafiq uses an RC network (resistor & capacitor), sometimes called an RC filter, to correct the signal timing. #led #circuit #digitalelectronics The BetterEnlightened journey; all episodes in order (YouTube playlist): https://youtube.com/playlist?list=PL8fx2PasT3iDHbZt3daNV69Nn2KMNSdC5 Arif K. Rafiq's professional GIS in Civil Infrastructure content: https://youtube.com/playlist?list=PLZ9TJcIeAUwcXCZhXK1Mg3jPDULVDLRrf GIS in Civil Infrastructure at Esri Canada: https://resources.esri.ca/transportation Speaking inquires: https://temperedoptimism.com LinkedIn: https://linkedin.com/in/rafiqtransport/ 00:00 Language of digital electronics 02:02 Capacitor 101 03:35 5-bit binary counter spaghetti 04:49 32 high power LED intensity levels 05:38 Digital logic occasionally fails 06:27 LED intensity controller schematic 07:09 3 burly bouncers guarding the AND gate 11:07 Logic level transitions 12:55 Capacitors charge and discharge through resistors 13:20 Pull up switch creates a voltage divider 15:15 Pull down switch works better 16:39 Invert switch action with a MOSFET 18:19 How to make rise time equal fall time 20:16 Complimentary pair MOSFET 23:12 4013 NAND as a CMOS inverter 25:20 Capacitor charge and discharge curves 27:55 CMOS low and high thresholds 30:43 Calculating the time along a capacitor curve 31:45 Component error 36:02 Values for rising and falling resistors 39:58 The final circuit