Electronics Handbook/Circuits/π

Configuration
Circuit of 3 resistors connected like a pie π


 * IR1 = IR2 + IR3
 * $$\frac{v_i}{R_1} = \frac{v_i - v_o}{R_2} + \frac{v_o}{R_3} $$
 * $$\frac{v_i}{v_o}= ( \frac{R_3}{R_1} ) ( \frac{R_2 - R_1}{R_2 - R_3} ) $$


 * $$\frac{v_o}{v_i}= ( \frac{R_3}{R_1} ) ( \frac{R_2 - R_1}{R_2 - R_3} ) $$