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What is "gain" a measurement of in electronics?
WEBDec 11, 2012 · Gain is just the ratio of two quantities. When talking about circuits, it's almost always the ratio of some measurement of the output of a circuit or component to its input. As Olin said, the most common case is the voltage gain. That is, the ratio between the voltage amplitude of the output signal to the input signal.
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transistors - What's the actual difference between …
WEBGain is simply output/input, for example Vout/Vin. So for an emitter follower you cannot say that "it has no gain" because it does! An emitter …
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What do you actually mean by DC voltage gain and AC voltage …
WEBNov 28, 2015 · 2 Answers. Sorted by: "Gain" means how much bigger is the voltage (or current, or power) at the output than at the input. Gain is important because it allows us to take a small signal and amplify it to make a larger signal.
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Powered by Microsoft Startwhat is exactly 'gain and loss' is and how is it used?
WEBSep 9, 2018 · "Gain" is just the ratio of output strength to input strength. For example, if a amplifier increases a voltage by a factor of 4, then the amplifier can be said to have a gain of 4. "Loss" is a bit more ambiguous term. It can mean just the reciprocal of gain. It is usually applied when a signal is attenuated instead of amplified.
Gain margin and Phase Margin Physical Meaning
WEBAug 29, 2015 · Gain and phase margin are usually applied to systems that are amplifiers of some sort with negative feedback around them. The more negative feedback, the tighter the system is controlled. However, you don't want to provide feedback in such a way that the system will oscillate.
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Why is transistor gain measured in terms of current?
WEBJul 9, 2017 · Many electronic active elements have a transconductance, abbreviated gm. Multiplying [gm * output resistance] does describe the voltage-gain. This math is accurate for bipolars, FETs (MOS and J …
Whats the difference between amplification and gain …
WEBUsing that approximation, the voltage gain (dVout/dVin) of the circuit above is 1 from IN to the load. However, there is signigicant current gain. When IN goes up by 1 V, the voltage on the load is increased by 1 V, which …
How is gain margin defined for this control system?
WEBOct 1, 2022 · Gain margin is defined as the amount of gain (amplification) needed to bring your system into instability. For your system \$H(s) = \frac{3}{s} \$ the gain margin is infinite because the critical point (0dB …
bjt - Gain of an amplifier - Electrical Engineering Stack Exchange
WEBJan 8, 2021 · Sometimes the gain is dependent on the signal level; and that is deliberate, in the case of AGC, or compressors, limiters and noise gates. Loop gain larger than unity: Unstable biaspoint, saturation (even without any input signal) - the definition of …
What is the Gain, Input and Output Impedence in this …
WEBGain: You need to find the overall Vout/Vin, not just the gain of the op-amp. to make the math easier, assume 2V at Vin, which then puts 1V at the positive input of the op-amp. As an ideal op-amp, it will strive to make …
Understanding the gain in an RC circuit's transfer …
WEBFeb 10, 2021 · The gain in the transfer function shows what gain you'll get in infinite time after input stabilizes. And this is indeed 1, because after enough time Vout always equals Vin. To understand what happens with …
Confusion between Voltage gain & Voltage gain in decibels (dB)
WEBThe definition of voltage gain is Vout/Vin V out / V in. However, I read some articles about the gain in decibels, and I have a confusion now. Here is an article about it: https://en.wikipedia.org/wiki/Gain#Voltage_gain. Here, I understand the definition of Power gain in decibels, which is. Gain = 10 log(Pout Pin) dB Gain = 10 log.
amplifier - Confused about the definition of voltage gain
WEBOct 5, 2020 at 15:00. I think your voltage and current gain definitions are incorrect. The voltage gain is defined as: \$ 20log_ {10} (\frac {V_ {out}} {V_ {in}) \$. It does not contain the ratio of the input and output impedance as you have defined. Similarly for the current gain.
transistors - Current gain or voltage gain? - Electrical Engineering ...
WEBBy passing the greater collector-emitter current through a resistor, a voltage arises across the resistor. This voltage can be substantially greater in size than the input signal applied to the base of the transistor. So the circuit in …
bjt - Confusion in the difference between DC current gain and AC ...
WEBNov 20, 2016 at 3:06. If d (Ic)/d (Ib) has a near-constant value, there's no distortion, so distortiion is in the second and higher derivatives d^2 (Ic)/d (Ib)^2 is the curvature, and it looks rather small over a large collector current range. Temperature dependence of gain is a much greater effect.
Terminology confusion with sensitivity used with gain
WEBJun 19, 2019 · Let's say we have a force transducer outputting 1mV/N; if we then amplify this by a gain of 10, it will output 10mV/N. Does that mean we increased the "overall sensitivity"? Or should the term "sensitivity" only be used when no amplification is applied? sensor. gain. resolution. sensitivity. Share. Cite.
operational amplifier - How do the open loop voltage gain and …
WEBOct 10, 2012 · Closed loop gain is the gain that results when we apply negative feedback to "tame" the open loop gain. The closed loop gain can be calculated if we know the open loop gain and the amount of feedback (what fraction of the output voltage is negatively fed back to the input). The formula is this:
Antenna concept, is it a passive device but how about gain?
WEBJun 23, 2017 · Gain is a directional property that is commonly expressed in decibels referenced to isotropic (dBi). An isotropic antenna radiates the same power in all directions and therefore its gain is 1 dBi in all directions.
gain - Input and Output impedances of Current and Voltage …
WEBMay 22, 2019 · Voltage gain : Collector output. Current gain ; Collector or Emitter Follower (voltage gain =1 ) Conductance gain = impedance reduction. Power gain (any combination of the above ) Linearity improvements : using negative feedback, which lowers input AND output impedance but reduces voltage gain by using R ratios.
Why use gains on an ADC - Electrical Engineering Stack Exchange
WEBMay 17, 2021 · Gains can be < 1. – pgvoorhees. May 17, 2021 at 12:21. You could address this by using an ADC that has more bits to begin with, but an analog gain block is usually a lot more cost-effective. but what about those 24bits, 32 bits ADCs boosting the signals would make less sense since the adc is capble.
circuit analysis - Why can you define closed loop gain when return ...
WEBAug 12, 2021 · \$A_{∞}\$ is defined as the closed loop gain \$A\$ when \$ \mathscr{R}\to ∞\$. Why don't you remove \$\frac{g}{\mathscr{R}}\$ as it would also approach zero when \$ \mathscr{R}\to ∞\$ ? The excerpt is from Analysis and Design of Analog Integrated Circuits, 5th Edition Book by Paul R Gray.
operational amplifier - Bandwidth and Gain bandwidth product ...
WEBDec 21, 2019 · The Gain Bandwidth product is useful when using an opamp with negative feedback. It allows you to choose one (gain or BW) and instantly know what the other will be, see here: electronics.stackexchange.com/questions/340790/….
Gain-bandwidth product proof for open loop/closed loop opamp
WEBDec 2, 2016 · Gain Bandwidth Product, GBWP (a.k.a. GBW), can be defined as: $$ GBWP = A_{CL} \, \cdot \, BW_{CL} $$ where: A_CL represents the "Closed Loop Voltage Gain". BW_CL represents "Closed Loop Bandwidth". Another way to look at this is that the "Closed Loop Bandwith" of your Op Amp will be the GBWP divided by your "Closed Loop Gain", …
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