Hi all,
As we know that formula for gain of non-inverting amplifier is G = 1+ (Rf/R1) and also Vout = Vin*G.
When applied Vin=4V (to non-inverting terminal), then, how to choose the resistor values in order to get the gain=1.25 and to get Vout=5V. To get the gain=1.25, the Rf value should be smaller than the R1. But, In general circuits, I have seen that Rf is higher than the R1. If this is the case, then I can't achieve what I want from the amplifier. I'm believing that Rf value should be smaller than the R1 value to achieve required gain, if I'm right, then, is that the resistor values should be Ohms or KOhms?. So, please can you help me?.
As we know that formula for gain of non-inverting amplifier is G = 1+ (Rf/R1) and also Vout = Vin*G.
When applied Vin=4V (to non-inverting terminal), then, how to choose the resistor values in order to get the gain=1.25 and to get Vout=5V. To get the gain=1.25, the Rf value should be smaller than the R1. But, In general circuits, I have seen that Rf is higher than the R1. If this is the case, then I can't achieve what I want from the amplifier. I'm believing that Rf value should be smaller than the R1 value to achieve required gain, if I'm right, then, is that the resistor values should be Ohms or KOhms?. So, please can you help me?.