hello.
i want my LM3914 (dot/bar driver) to measure a voltage source from 380v to 730v.
i have a DC source varying between 380-730v, i want the first led to be on at 380v, and the last led on at 730.
i need the schematics resistor values,
how can i calculate them ?
i tried different values with trimmers but couldn't get it precise scale.
thanks !
i want my LM3914 (dot/bar driver) to measure a voltage source from 380v to 730v.
i have a DC source varying between 380-730v, i want the first led to be on at 380v, and the last led on at 730.
i need the schematics resistor values,
how can i calculate them ?
i tried different values with trimmers but couldn't get it precise scale.
thanks !