I have finished an LED sequencing circuit using the 555 timer and 1047 decade counter. (I'll probably post a schematic later.) Connected across the LED arrays are discharging caps (C2, C3, and C4 shown in red) so that there's a fading on/off effect when they blink which so far works. My question is, do I need to add diodes in the circuit to protect the 555 and 1047? I think that not only are the caps discharging through the LEDs, but also through those ICs which might be overheating them a bit. I have burnt out a 1047 which was likely from a loose connection somewhere in the circuit. Any ideas would help.