## How do you find Thevenin resistance of an op amp?

The correct answer is D.

- Rth=Rs+R(amplifier)
- IN=A.1/(Rs+RL)=A/(Rs+RL)
- Rth=Rs+(Rs+RL)/2=Rs(A+1)+RL.

## How is the Thevenin resistance calculated?

Find the Thevenin Resistance by removing all voltage sources and load. Find the Thevenin Voltage by reconnecting the voltage sources. Use the Thevenin Resistance and Voltage to find the total current flowing through the load.

**What is Vcc and Vee in op amp?**

VCC, VDD: Positive power supply. VEE, VSS: Negative power supply. IN (+): Noninverting input. IN (-): Inverting input. OUT: Output.

**What is load resistance Thevenin?**

The Thevenin/Norton resistance is the resistor that comprises the resistance of the Thevenin/Norton. The load resistance is what connects to the two terminals of the equivalent circuit (i.e. directly between nodes “A” and “B”).

### How do you find equivalent resistance?

The equivalent resistance of a 4-Ω and 12-Ω resistor placed in parallel can be determined using the usual formula for equivalent resistance of parallel branches: 1 / Req = 1 / R1 + 1 / R2 + 1 / R3 Now the Ohm’s law equation (ΔV = I • R) can be used to determine the total current in the circuit.

### Why is it called VCC?

The original designation for VCC was: VOLTAGE, common collector….meaning the rail that all the collectors were attached two. Now that we have FET’s there can be Vss, Vdd, and Vee: the latter being the common EMITTER source….especially in positive ground systems.

**Is load resistance the same as Thevenin resistance?**

Thevenin Equivalent Circuit In other words, the load resistor (R2) voltage and current should be exactly the same for the same value of load resistance in the two circuits.

**How to find Thevenin resistance AMP opamp?**

You can obtain the same results by placing a Voltage source V T in series with the element and finding the current I T. That opamp circuit is normally an inverting amplifier with voltage gain Av=-RL/Rs. Normally the load is between the output of the opamp and GND. You have declared the output to be the terminals of RL.

#### Which is the impedance of the Thevenin equivalent?

The Thevenin equivalent supply voltage is the same as the open-circuit output voltage. If the open-circuit voltage is Vo and the short-circuit output current is Is, then the Thevenin equivalent impedance is Vo / Is. Thanks for contributing an answer to Electrical Engineering Stack Exchange!

#### What is the output resistance of an op amp?

An Op Amp’s own output resistance is in the range of tens of ohms. Still, when we connect the Op Amp in a feedback configuration, the output resistance decreases dramatically. Why? To answer these questions, let’s calculate the output resistance of the non-inverting amplifier.

**What is the gain of an op amp?**

First deal with the op amp. It has a gain = -Rf/R1 so that the voltage feeding into R2 is -vi * Rf/R1.Note that the op amp will invert the signal voltage. The output resistance is taken as zero for a perfect op amp. C is in parallel with R3.