it is an analogue signal coming from solar panel.IS this an analogue signal? Or a digital signal where 1.5V and 2.4V are the logic levels? What is the frequency?
if needed I can add OPA, but I don't know how to convert it from 0 to 3.6V to range of 1.5 to 2.4hi ash,
Do you have access to any low voltage rail to rail OPA's?
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Is the solar panel powering the circuit? If so, getting 1.5V out from 0V in might prove a bit challenging.if needed I can add OPA, but I don't know how to convert it from 0 to 3.6V to range of 1.5 to 2.4
This can be resolved by inspection and superposition, applying resistor equations as shown.Hi,
I am looking for a way to change 0-3.6V to 1.5V to 2.4V. are there any possible options? I only have a +ve rail of 2.4V on my board and no negative rail?
Here's an easy way to solve for the resistor values that avoids simultaneous equations calculations.
Start with an arbitrary resistor value for R5.
Solve for the value of R1 when Vin = 3.6V that gives Vout = 2.4V
Since Vout equals the supply voltage, R3 can be ignored, as there is no current through it.
Using the parallel value of R5 with the calculated value for R1, calculate the value for R3 that gives Vout =1.5V for Vin = 0V
Sim below for the calculated values (left as an exercise for the reader ).
View attachment 294600
So you think it's more than just a coincidence?There is something unique about this exact particular problem too and that is that the following relationship holds true (using labels in that drawing):
R5=R1*R3
I think that is unique.
Well i have that suspicion and that would make it easy for an instructor to figure out if the student got the right answer.Maybe it is a test question in an undergraduate electrical course?
Hi,So you think it's more than just a coincidence?
by Aaron Carman
by Aaron Carman
by Jake Hertz
by Aaron Carman