ADWSystems
Member
I was drawing a schematic with a LM393 and NPN transistor to boost the output current. Originally I had a pull-up resistor on the '393 output and a base resistor on the NPN, but when I drew the schematic I forgot the base resistor which got me to thinking if I really needed a base resistor. What are the pros and cons to including and omitting the base resistor? The pros I can see is one less resistor and a simpler circuit. I don't see any cons, does anyone else?
View attachment 63761
View attachment 63761