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What has the author D J H Maclean written?
D. J. H. Maclean has written: 'Broadband feedback amplifiers' -- subject(s): Broadband amplifiers, Feedback amplifiers
Can we use positive feedback in amplifiers?
Yes because an amplifier with positive feedback is an oscillator.
What does positive feedback do in amplifiers?
It usually makes them self-oscillate or 'hoot'.
What has the author Sol Rosenstark written?
Sol Rosenstark has written: 'Feedback amplifier principles' -- subject(s): Feedback amplifiers
What is frequency compensation?
Frequency compensation is a technique used in amplifiers. It basically controls the sound of the amplifier to make it sound clear and free of positive feedback.
What are the disadvantages in votage series and voltage shunt feedback amplifiers?
Voltage series feedback amplifiers can suffer from reduced input impedance, which may affect signal source loading. They can also introduce phase shifts that may lead to stability issues. Conversely, voltage shunt feedback amplifiers can lead to increased output impedance, which may limit their effectiveness in driving loads. Additionally, both configurations can experience bandwidth limitations due to feedback network design.
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).
Explain current shunt negative feedback amplifier?
describe current-shunt negative feedback as applied to operational amplifiers, including derivations of the gain relation for each type of negative feedback.
What are the most used instrument amplifiers?
The most used instrument amplifiers are also some of the most popular amplifiers namely Marshall, Crate and Fox amplifiers. The impedance of these amplifiers does not need to match making it perfect for instrument use.
What is negative feedback in an amplifier?
feedback that reduces gain to help stabilize amplifier operation. gain is easy and cheap to get, stability isn't. its a tradeoff. so amplifier is deliberately designed with much more gain than needed and negative feedback sacrifices some of that gain to stabilize it.
What are antenna amplifiers used for?
Antenna amplifiers are used to strengthen the signal being supplied to an appliance such as your TV. Amplifiers are necessary when the signal is weak and interferes with your TV reception.
What are the most used instruments?
The most used instrument amplifiers are also some of the most popular amplifiers namely Marshall, Crate and Fox amplifiers. The impedance of these amplifiers does not need to match making it perfect for instrument use.
