I made myself a VU meter and amplifier with a 7.2V supply and discrete components. I plan to double the voltage as the discrete components can handle it.
Now for better lighting effects, I want to take the output of the VU meter and connect it to a CD4017 IC for like a special led effect on every music beat.
I checked the data sheet and It says the IC works up to 15-18V so I'm safe there, but what about LED output? Am I safe to connect the leds and 3.3K resistors in series and directly to the output pins? And what would the internal resistances be to the output pins from within the chip?
And is it normal if the IC warms up somewhat due to the high-ish voltage going through it?
I'm used to working with IC's on a 5V supply not on a 14.2V supply.
Now for better lighting effects, I want to take the output of the VU meter and connect it to a CD4017 IC for like a special led effect on every music beat.
I checked the data sheet and It says the IC works up to 15-18V so I'm safe there, but what about LED output? Am I safe to connect the leds and 3.3K resistors in series and directly to the output pins? And what would the internal resistances be to the output pins from within the chip?
And is it normal if the IC warms up somewhat due to the high-ish voltage going through it?
I'm used to working with IC's on a 5V supply not on a 14.2V supply.