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Fys said:I have a bit difficulties deriving the equation V in =Vout * R2/(R1+R2)
Because I can't see a closed loop here
Can someone help with this
Thx
This equation is commonly known as the voltage divider equation, and it is used to calculate the output voltage (Vout) of a voltage divider circuit. It relates the input voltage (Vin) to the resistance values of the two resistors in the circuit (R1 and R2).
The voltage divider equation can be derived using Ohm's Law and the principle of voltage division in a series circuit. By applying these principles and using the definition of voltage as the potential difference between two points, the equation can be derived.
Yes, this equation can be used for any type of voltage divider circuit, as long as there are only two resistors in series. It is a general equation that applies to both DC and AC circuits.
The voltage divider equation assumes that there is no current flowing through the output terminal, and that the resistors are connected in series. If these conditions are not met, the equation may not accurately calculate the output voltage.
No, this equation can only be used to calculate the output voltage of a voltage divider circuit. To calculate the input voltage or resistance values, other equations such as Ohm's Law or the power equation must be used.