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A differential amplifier is used In input stage of op-amps to achieve very high?
CMRR
What is vhf wideband amplifer?
"wide band amplifiers are those amplifiers which amplify ah a higher band width or in short the frequency range is very wide.. by VHF indicates Very High Freaquency- denotes hiher ranges of freaquency 30MHZ to 300 MHZ these amplifiers are working on these reagions so as we need amplifiers of these range normally the internal capacitace of high freaquency switching will affect the freaquency due to internal juction capacitance(MILLER CAPACITANCE)will attenuate the freaquency so much. to avoid this problem we have to use the high freaquency transistors. normally BFW195 are used for small range of aplications commonly" WITH LOVE MADHAV "MADHAVNAMBIARCK@YMAIL.COM"
Why do guitar rockers choose tube amplifiers instead of transistor amplifiers?
A: TUBE AMPLIFIERS are operating at higher voltage which makes the dynamics of amplitudes more desirable. Other then that there is no other reason. tube amplifiers are bulky heat generating components efficiency poor and frequency limited.
Why power amplifier are called as large signal amplifiers?
in general the CE amplifiers are called low-signal amplifiers as they use only small values of voltage as a source of input which cant be used in practical purposes, whereas power amplifiers deal with practical values of input and output voltages
How does a amplifiers work?
well you have to have a wank
Why it is desirable for an op amp to have a high CMRR?
A high CMRR prevents the opamp from passing undesirable common mode signals.
Why high CMRR is preferred?
You want an amplifier to reject common mode signals (the same signal applied to both inputs of a differential amplifier) because:it is generally noise, which sounds like staticit can cause drift in the amplifier eventually saturating it, causing clipping distortionBTW, single ended input amplifiers by definition have a CMRR of zero.
What is CMRR?
CMRR is common mode rejection ratio. it is the ratio of Differential gain to common mode gain. CMRR=Ad/Ac
What kind of integrated amplifiers are best for instrumental music?
The EAR / Yoshino 834T Integrated Amplifier is great for that.
A differential amplifier is used In input stage of op-amps to achieve very high?
CMRR
What is the advantage of a high CMRR?
A high Common-Mode Rejection Ratio (CMRR) indicates a better ability of a circuit to reject unwanted noise or interference that is common to both input signals. This results in improved accuracy and stability of measurements or signals being processed by the circuit.
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.
Why the internal resistance should be high in operational amplifiers?
High input impedance implements the operation of the external feedback circuitry (e.g. diff. amplifiers vs. comparators).
Why is the unit of CMRR?
pseudo
What is CMRR of differential amplifier?
CMRR stands for Common Mode Rejection Ratio, and it is a measure of how well the amplifier rejects signals that appear on both leads. The idea is that an amplifier should amplify the (Differential Mode) signal, but not any noise (Common Mode) that might appear on the lines, perhaps due to induction from nearby AC power sources. Since induction will show up on both leads, a high CMRR amplifier will have a greater signal to noise ratio overall
What types of applications are valve amplifiers used for?
A quick search of this incredible question brought fourth some greater insight into the matter. It turns out the applications valve amplifiers are used for vary from guitar amplifiers, satellite transponders, audiophile stereo amplifiers, military applications and high power radio and UHF television transmitters.
Which brands of amplifiers does Audiogon sell?
Audiogon are responsible for the sales of high quality amplifiers from branded companies such as Bryston, Perreaux, Accuphase, Krell Evolution and D-Sonic and many more.
