Can someone draw me a simple circuit to drive a few relays (I don't know how many outputs the 4017 has, I think it is 8).
I saw it somewhere on a site and lost it.
I remember it was a simple circuit with the outputs of the CD4017 saturating the transistors and then to the relay.
I understand the 4017 can push 9mA per output...to drive the transistors.
It was for 4 relays, and had 5 transistors, one diode, and about 5 resistors I think.
You could change from relay to relay in sequence with one touch of a button with 4 LED pilots.
I saw it somewhere on a site and lost it.
I remember it was a simple circuit with the outputs of the CD4017 saturating the transistors and then to the relay.
I understand the 4017 can push 9mA per output...to drive the transistors.
It was for 4 relays, and had 5 transistors, one diode, and about 5 resistors I think.
You could change from relay to relay in sequence with one touch of a button with 4 LED pilots.