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I f an amplifier has a great gain lets say 1000 and the power supply is 10 v then 10 mv will saturate the amplifier to either rail some amps has 10mv just in offset voltage
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∙ 14y ago
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How do you improve open loop system?
Feedback from the output to the input will provide stability and control. It is desirable to havemaximum open loop gain but without proper feedback it will be probably totally unstable
What is use of spike buster in relay?
A: I never heard of a spike buster but if you are from England I would understand the different terminology. The use for the spike buster is to protect the driving circuit from negative spikes generated by the relay coil as it releases the power stored in it. The DIODE [ SPIKE BUSTER] will clamp harmlessly the negative spike to .6 to .7v negative which will harm the driving circuit Without the diode hundreds of volts can be generated destroying the driving circuit
What is the difference between oscillator and multivibrators?
Oscillator is an electronic circuit which can generate oscillating sin signal without any oscillating input with use of positive feedback Multivibrator is a two stage RC coupled amplifier circuit which can generate squae signal without ac input
How does a transistor act as a oscillator?
A: actually any active components will oscillate with positive feedback A transistor can be used as an amplifier along with an LC tank circuit to form an oscillator; it is an active device (as LIBURNO states) which will amplify the feedback signal coming out of the LC tank circuit. The tank circuit has a natural resonant frequency, meaning the L and C together will try to generate a specific frequency; this is then fed back into the input of the transistor amplifier, and the output is fed to the LC tank circuit exacerbating this oscillation until it reaches its' maximum level. An inverting amplifier can be used similarly; the output is fed to the input; this will cause the output to change as fast as the amplifier can. The frequency of this design is much harder to control, but potentially higher. Also, without the LC tank, the output voltage will remain lower.
What is the logic behind flow of electricity without circuit?
current
Is opamp a linear device?
A: It should be that is the normal operating mode. To be linear it strongly depends on negative feedback to maintain it into that linear region. By itself without any feedback it is very unstable due to the hi gain open loop availability
Is it impossible to keep your body chemistry in balance without some sort of negative feedback mechanism?
No you need negative feedback!
How are negative and positive feedback involved in homeostatic regulation?
Negative feedback occurs when the output of a system reacts to cancel out the effects of an input of a system, as opposed to positive feedback (in which the actions/output is intensified or increased). The more negative, the more stable. Thus, with things being canceled out, the body maintains homeostasis. An example of negative feedback in action is the maintenance of blood glucose levels and body temperature. With input of sugar, insulin is released to stabilize the body (on the other hand, without insulin, diabetes can be diagnosed). With a raise in body temperature, blood vessels and pores are opened to release heat.
How do you improve open loop system?
Feedback from the output to the input will provide stability and control. It is desirable to havemaximum open loop gain but without proper feedback it will be probably totally unstable
What is an example of negative feedback in living organisms?
If you stick your hand in a fire, it will hurt. That is negative feedback. Pain receptors are a very important survival adaptation. Without them, living things would be extremely damage-prone.
Why is feedback useful?
So u can understand the subject/person better
Can the car run without the negative terminal connected?
The negative teminal needs to be connected to complete the electrical circuit. Without that none of the electronics in the vehicle will work, including the starter.
Why is there a positive and a negative in a car battery?
Because you won't get a complete and closed circuit without a ground.
What is the importance of negative feedback in the control of vasodilation and vasoconstriction?
Vasoconstriction and Vasodilation are a part of a body negative feedback, in which the body tries to restore homeostasis. Homeostatis is the function of keeping the internal body at it's general temperature (37 degrees Celsius). Without the negative feedback of Vasoconstriction and Vasodilation, the body would either be at a very low or very high temperature and this high/low temperature could cause death.
Can you have a viable system without feedback?
A system requires feedback to fix out bugs and errors made by the developer, your system can be viable without feedback however getting feedback is recommended
What is thermal stability of transistor?
The thermal stability is the ability of the transistor to withstand changes in temperature without the transistor's parameters changing. Transistors generally have poor thermal stability and in particular the Beta parameter increases with temperaure, which can cause thermal runaway in a badly designed circuit. This is well known and the bias current in transistors is normally stabilised by the application of negative feedback in proper circuit design.
What is a complete electric circuit?
A complete electric circuit is basically an electric circuit in which the electrons flow from negative terminal to positive terminal without any disturbance. The switch has to be closed in order for this to work otherwise, the flow will be broken.
