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What is the output impedance of a function generator?
Most function generators or signal generators output voltages are limited to about +/-5V into a 50 ohm load. Such generators output impedance is typically 50 ohm, making them unsuitable for driving low resistance (high-current) loads.
What is the internal resistance of a function generator?
1 Answer. As the function generator is specified with an internal resistance of 50 Ohms, its signal specifications would be for a 50 Ohm load. For example, for a 5 Volt signal output setting, and using a matched 50 Ohm load for X above, the current through the loop will be: I = V / R = 5 / 100 = 50 mA .
For what purpose we use CRO and function generator?
INTRODUCTION: The cathode-ray oscilloscope (CRO) is a common laboratory instrument that provides accurate time and aplitude measurements of voltage signals over a wide range of frequencies. Its reliability, stability, and ease of operation make it suitable as a general purpose laboratory instrument.
What is high impedance state?
Hi-Z (or High-Z or high impedance) refers to an output signal state in which the signal is not being driven. The signal is left open, so that another output pin (e.g. elsewhere on a bus) can drive the signal or the signal level can be determined by a passive device (typically, a pull-up resistor).
What is the internal impedance of a function generator?
The internal impedance of the voltage driver and a resistor inside the function generator contribute to R i n t. The cable impedance does not contribute to this. The function generator’s output impedance will be 50 Ω. Thanks for contributing an answer to Electrical Engineering Stack Exchange!
Which is the ideal impedance for a voltage source?
You have an ideal voltage source (with zero output impedance) with a 50 Ω resistor in series ( R i n t ), and so the total output impedance is 50Ω. In your schematic above, the voltage source is ideal, and so R i n t would be 50 Ω.
How is the reactance of a generator determined?
The sub-transient reactance of a generator set is used to calculate the maximum available short circuit current for selecting circuit breakers with adequate interrupting rating. Since nearly all of the generator impedance is reactance, addition of the DC component for the first few cycles may almost double the symmetrical value of cur- rent.
How are function generators used in SPECI abletime?
Function generators are signal sources which provide a speci ablevoltage applied over a speci abletime, suchas a \\sine wave” or\riangle wave” signal. These signals are used to control other apparatus to, for example, vary a magnetic eld (superconductivity and NMR experiments) send a radioactive source back and forth (M ossbauer