Voltage Ladder Arduino 12V 9V 5V 3.3V 2.8V

Voltage Ladder Arduino ----------------------------------------------------------------------- A Voltage Ladder is similar to a Voltage Divider, but it uses more than 2 resistors. This circuit takes 12V DC and divides it into popular voltage values such as 9V, 5V, 3.3V, and 2.8V which can be used with sensors, microcontrollers, and other projects. ----------------------------------------------------------------------- Voltage Formula: Vout = V - Vdrop Vdrop = Vin * ( R / Rtotal ) ---------------------> *Vout = V - Vin * ( R / Rtotal ) Example 1st Circuit: V1 = V - Vdrop = 12V - 12V*( 300/1200) = 12 - 12*(1/4) = 12-3 = 9V V2 = V - Vdrop = 9V - 12V*( 400/1200) = 9 - 12*(1/3) = 9V - 4V = 5V V3 = V - Vdrop = 5V - 12V * ( 170/1200) = 5V - 1.7V = 3.3V V4 = V - Vdrop = 3.3V - 12V * (50/1200) = 3.3V - 0.5V = 2.8V V5 = V - Vdrop = 2.8V -12V * (280/1200) = 2.8V - 2.8V = 0V --------------------------------------------------------------------- Current Formula: I = V / R Example 1st Circuit: I = 12V / 1200 ohms = 10mA. --------------------------------------------------------------------- Best, Tehrangeles⚡