This is an easy tutorial showing how you can control the brightness of an LED or adjust the speed of a DC fan using Arduino Board, a small BC547 transistor and a potentiometer ... voltage on the ...

[Faransky] has created a very impressive Arduino function generator ... So [Faransky] uses a X9C104P 100KOhm 8-bit digital potentiometer as a voltage divider on the chip’s output.

This variable resistor is connected in a voltage divider configuration, and Arduino collects a voltage proportional ... find the resistor’s value is to try different values or use a potentiometer.

The output voltage of a voltage reference device can be adjusted using a digitally controlled potentiometer (DCP ... is internally biased by a resistor divider. The trim pin can also be driven ...

a voltage divider between the output and feedback pin is used to enable setting of the output value. 2. By substituting a digital potentiometer for the two fixed resistors, a structure is ...