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What should be the phase margin and gain margin For stability?
A very high gain margin or phase margin produces stable feedback systems, however they may be sluggish in operation. If the gain margin is close to unity of the phase margin is close to zero, the system will be highly oscillatory and produce overshoots with large amplitudes that take a while to settle. Having a gain of 6 dB or phase margin of 30 - 35 degrees will give you a relatively stable system. However there exists cases where this may not be so. :-)
What is the effect of feed back on gain?
A: Number one it provide stability for the amplifier or system. The greater the feedback the greater the stability but less gain. In other words gain is inversely related to feedback
How does using a transistor with a different beta affect the operation of the common emitter amplifier?
Gain, in the common emitter amplifier, is beta (hFe) or collector resistance divided by emitter resistance, whichever is less. Substituting a different beta (hFe) transistor will affect gain, if hFe is less, or increase stability and design margin, if hFe is greater.
What is dB in Electronics Engineering?
Deci-bels (dB) are a logarithmic measure of system/network amplification or gain (G). The logarithms are taken to the base 10 and multiplied by 20:dB = 20logG (where G is the gain of the system)To give an example of what this means:G = 0.01, so dB gain = 20log0.01 = 20 * -2 = -40dBG = 0.1, so dB gain = 20log0.1 = 20 * -1 = -20dBG = 1, so dB gain = 20log1 = 20 * 0 = 0dBG = 10, so dB gain = 20log10 = 20 * 1 = 20dBG = 100, so dB gain = 20log100 = 20 * 2 = 40dBG = 10000, so dB gain = 20log10000 = 20 * 4 = 80dBThere are other uses for dB in electronics, where logarithms are useful they are preferred. The reasons logs can be useful is because the natural log of an exponential curve is a straight line, allowing for easier ways of understanding the behaviour of a system.
Why input gain of an amplifier is doubled from output gain?
The gain of a transister stage is determined by its biasing circuit design. The emitter of a transistor is affected by the input signal on the base. If the base forward biases the transistor, the emitter feels the potential of the colector. If the base reverse biases the transistor, the emitter is isolated from the collector and feels the potential of the emmiter biasing circuit. The output signal at the emmiter is representitive of the signal on the base, 180 degrees out of phase. The amplitude of the output signal will be larger, depending on the biasing circuit design.
What should be the phase margin and gain margin For stability?
A very high gain margin or phase margin produces stable feedback systems, however they may be sluggish in operation. If the gain margin is close to unity of the phase margin is close to zero, the system will be highly oscillatory and produce overshoots with large amplitudes that take a while to settle. Having a gain of 6 dB or phase margin of 30 - 35 degrees will give you a relatively stable system. However there exists cases where this may not be so. :-)
Find gain margin from a transfer function?
First find the phase crossover frequency and then use that back into the magnitude of the transfer function.Then the gain margin is the reciprocal of that magnitude.
When antenna diameter is doubled what will happen to antenna gain?
increases by 6 dB
Why did the federal reserve try to regulate margin loans and why were it's efforts only partly successful?
The Federal Reserve tried to regulate margin loans to gain control of margin requirements for stocks bought on margin. Regulation T gives the Federal Reserve the authority to change the percentage of the initial margin requirement for margin stock. Since 1974 the Federal Reserve has not deemed it necessary to adjust the margin requirement
Do objects gain energy when they are hot?
No, objects that gain energy become hotter.
Does bromine tend to lose or gain electrons to become an ion?
Bromine tends to gain one electron to become a Br- ion.
Where can you gain experience to become a pediatricion?
college
Why do Non-metal atoms gain electrons to become an ion?
bcc it's the same
What does it mean to gain popularity?
To gain popularity means to suddenly become popular and have a lot of "followers"
Is the Gain laundry detergent coupon able to be doubled?
Kroger does occasionally double coupons. Some products are ineligible for coupon doubling, you will have to check with the manager of your local store.
When does a particle become charged?
gain or lose electrons
When did Ohio gain become a state of the US?
1803
