LM3914 LED outputs connected to LEDs, single supply operating at 5v dc.
When operating in dot mode, each LED lights then turns off when the next higher voltage level is detected.
Question:
When the LED is off, the output pin seems to float? That is, there is only a tiny ( in the tens of mv range) random fluctuating on the pin.
indicating it is in an "open" state. How is that accomplished? I'm missing something simple I'm sure, but why doesn't the pin rise to 5v?
thanks
eT
When operating in dot mode, each LED lights then turns off when the next higher voltage level is detected.
Question:
When the LED is off, the output pin seems to float? That is, there is only a tiny ( in the tens of mv range) random fluctuating on the pin.
indicating it is in an "open" state. How is that accomplished? I'm missing something simple I'm sure, but why doesn't the pin rise to 5v?
thanks
eT