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I assume you're referring to an amplifier circuit. In a differential amplifier, there are two inputs. The common mode output voltage is the output voltage that will result from the same voltage being applied to both inputs. Typically this is very low, as the common mode rejection ratio (CMRR) is very high in a differential amplifier. This is an ideal characteristic (high CMRR) as it means unwanted noise will not be amplified and potentially squelch out the desired signal; this is why a differential amplifier is used in high quality sound equipment. Three wires are used - a ground, and two signal wires that are opposite each other. Noise will inherently "hop on" the signal wires, but as they are close to one another, it is likely the noise will be nearly the same magnitude and sign on each wire. Since the amplifier CMRR is high, this noise does not propogate through the amplifier, while the original signal is amplified.
What else can I help you with?
What is common mode rejection ratio Explain briefly?
common mode rejection ratio is defined as ratio of differential voltage gain to common mode voltage gain Common mode rejection ratio is the ability of the circuit to reject common entries like noise.
What is CMRR?
CMRR is common mode rejection ratio. it is the ratio of Differential gain to common mode gain. CMRR=Ad/Ac
What is the reason for putting a voltage rating on resistors?
Due to the physical construction and size of the resistor, at a certain voltage, the insulation will break down and the applied voltage will arc over. This is generally bad. Operating the resistor within its voltage rating will prevent this failure mode.
What is the voltage gain of common collector?
unity
Which bjt transistor amplifier can be used as a voltage buffer?
the common collector can use as voltage buffer
What is common mode rejection ratio Explain briefly?
common mode rejection ratio is defined as ratio of differential voltage gain to common mode voltage gain Common mode rejection ratio is the ability of the circuit to reject common entries like noise.
Why common emitter configuration is preferred?
Reason: The common Emitter mode has voltage and current gain better than the other two configurations(CB and CC). i.e it has a current gain greater than that of CC mode and greater voltage gain than that of CB mode.
In a 741 op amp non inverting amplifier with a closed loop Vg gain of 50 the typical output voltage that would result from a common mode input with a peak level of 100 mV and a CMRR of 90 db is?
To determine the output voltage due to a common mode input in a non-inverting amplifier, we first calculate the common mode gain. With a CMRR of 90 dB, the common mode gain (Ac) can be found using the formula: Ac = 1 / CMRR (in linear scale). Therefore, CMRR of 90 dB translates to a ratio of 10^(-90/20) = 0.0001. The common mode input voltage of 100 mV results in an output of 0.0001 * 100 mV * 50 = 0.5 mV. Thus, the typical output voltage from the common mode input is approximately 0.5 mV.
How you measure the CMRR of the 741C?
To measure the Common-Mode Rejection Ratio (CMRR) of the 741C operational amplifier, you apply a common-mode signal to both inputs while ensuring the differential input signal is zero. You then measure the output voltage and calculate the CMRR using the formula: CMRR = 20 log(V_diff/V_cm), where V_diff is the differential output voltage and V_cm is the common-mode output voltage. A high CMRR indicates that the amplifier effectively rejects common-mode signals, which is crucial for accurate amplification in differential signal applications.
How you can get regulated output voltage in SMPS?
To achieve regulated output voltage in a Switch Mode Power Supply (SMPS), feedback control is utilized. The output voltage is monitored and compared to a reference voltage, and any deviation triggers the control circuitry to adjust the duty cycle of the switching elements. This ensures that the output voltage remains stable despite variations in load or input voltage. Common feedback methods include voltage mode control and current mode control, both of which help maintain regulation effectively.
How many output terminals in smps?
smps out voltage is 12volt.. A switch mode power supply can have an output voltage of any value. However, common values are 5, 12 and 24V.
Why decibel is the unit of CMRR?
Decibel (dB) is a unit for expressing the Common-Mode Rejection Ratio (CMRR) because CMRR is typically expressed in terms of the logarithm of the ratio of the common-mode input voltage to the differential mode input voltage. Using decibels allows for easier comparison and understanding of the CMRR values, especially since CMRR values can span a wide range. It also simplifies calculations involving CMRR.
How many volts can a landline telephone handle without blowing?
Since the ringer voltage across the twisted pair is 120 VAC RMS the telephone can definitely handle that. Given the fact that the telephone is also supposed to survive induced surges from nearby lightning strikes to the line the telephone should be able to handle over 1000 V common mode impulses (but I don't know the exact limit). No telephone is expected to survive a direct lightning strike to the line (which could be millions of volts). Note: common mode means the voltage is applied between the twisted pair lines (both at about the same voltage) and ground. If the survivable common mode voltage were to be applied across the twisted pair instead it would severely damage the telephone.
When an enhancement MOSFET operates in the saturation region?
Saturation mode is when the drain voltage is higher than the gate voltage, at which point the channel becomes very wide and there's a good amount of current flow. This is also called the active mode. In comparison to the linear mode, where the current increases linearly vs drain to source voltage, in the saturation mode increasing the drain voltage further won't affect the current flow, since it's already saturated. Please note that it's assumed that the gate voltage is larger than the threshold voltage, which will turn on the FET.
How do you work out the mode?
mode is the most common
Which configuration of bipolar junction transistor which will give both current gain and voltage gain?
high voltage gain :- common base since the ratio of output impedance to the input impermanence is very high in common base mode high current gain :-common collector since it is the ratio of Ie/Ib
What is common mode output voltage?
I assume you're referring to an amplifier circuit. In a differential amplifier, there are two inputs. The common mode output voltage is the output voltage that will result from the same voltage being applied to both inputs. Typically this is very low, as the common mode rejection ratio (CMRR) is very high in a differential amplifier. This is an ideal characteristic (high CMRR) as it means unwanted noise will not be amplified and potentially squelch out the desired signal; this is why a differential amplifier is used in high quality sound equipment. Three wires are used - a ground, and two signal wires that are opposite each other. Noise will inherently "hop on" the signal wires, but as they are close to one another, it is likely the noise will be nearly the same magnitude and sign on each wire. Since the amplifier CMRR is high, this noise does not propogate through the amplifier, while the original signal is amplified.
