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Zarquon
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I am familiar with the concept of the internal resistance of a voltage source, but what is meant by the input impedance?
Simon Bridge said:Have you tried looking up the term?
Can you describe where the regular definitions online lose you?
http://en.wikipedia.org/wiki/Input_impedance
... you appear to be asked to design a circuit using an op-amp - the circuit in question has two voltage sources in it - which should have some information about frequency and phase as well and amplitude (voltage) if only implied (i.e. perhaps they are variable DC sources?)A circuit has input voltage V1 and V2. Design the circuit so that the output voltage is V0 = 10∫V1dt -5V2.
The input impedance of both voltage sources should be ≥ 100kΩ. Assume ideal op amp.
Input impedance refers to the overall resistance presented by a circuit or device to the flow of electrical current when a voltage source is connected to its input. It is measured in ohms and is an important factor in determining the performance of a circuit.
Input impedance is important because it affects the voltage and current that can be delivered by a voltage source to a circuit. It also determines the amount of power that is transferred from the source to the circuit, and can impact the accuracy and stability of the circuit's output.
Input impedance is calculated by dividing the voltage at the input of a circuit by the current flowing through it. It can also be calculated using Ohm's law, which states that impedance is equal to the voltage divided by the current.
The input impedance of a voltage source can be affected by the type of circuit or device it is connected to, the frequency of the input signal, and the amount of internal resistance in the source itself. Other factors such as temperature and environmental conditions can also impact input impedance.
Input impedance refers to the resistance presented to a voltage source, while output impedance refers to the resistance presented to a load by a voltage source. Input impedance is measured at the input of a circuit, while output impedance is measured at the output. Input impedance is also typically higher than output impedance.