This invention relates to electronic devices for the production or amplification of ultra-high frequency energy and particularly to such devices where the wavelength of the high frequency energy is comparable to the dimensions of the electron tube and the associated leads. The principal object......
This current-feedback operational-amplifier Based oscillator is used as a component for a capacitive, resistive and capacitive-resistive sensor electronic interfacing circuit.doi:US8860518 B1Muhammad Taher Abuelma'attiZainulabideen Jamal KhalifaUSJournal of Active & Passive Electronic Devices...
Low input resistance current-mode feedback operational amplifier input stage A current feedback operational amplifier input stage is provided that uses a pair of dual output current mirrors to couple current from the inverting input of the amplifier to the high gain node of the amplifier, and to...
Negative Feedback and Gain Why NFB is needed in amplifiers Transistors cannot be manufactured to have a closely controlled value of current gain h fe therefore it should not be possible to build a number of examples of the same amplifier circuit, all having ...
百度试题 结果1 题目Question. An oscillator is nothing but an amplifier with(a) positive feedback(b) large gain(c) no feedback(d) negative feedback 相关知识点: 试题来源: 解析 A 反馈 收藏
If the feedback signal is in phase and so is added to the input wave, this is called positive feedback, and its action is to increase the apparent gain of the amplifier, reduce its bandwidth, and make the gain figure of the amplifier more sensitive to any changes (such as a small ...
A frequency modulator basically consists of an amplifier and a resonator employing a varactor diode, and the linearity of frequency modulators has been analyzed and discussed looking at the resonance frequency calculated from the capacitance-voltage characteristics of a varactor diode. However, as the ...
AD825 was used as the main chip of theI–Vtransimpedance amplifier module, which used a T-shaped feedback network to convert a small current into a voltage signal. An adjustable inverting amplifier NE5532 was used in the second stage to amplify the voltage signal with a suitable range. ...
A simple model of feedback oscillator noise spectrum Authorized licensed use limited to: University of Electronic Science and Tech of China. Downloaded on August 4, 2009 at 02:48 from IEEE Xplore. Restrictions apply.
One additional mode of operation is possible if the oscillator is left disabled and the external clock signal is kept low (or floated). In this condition the error amplifier can be used in a linear fashion with its output taken at the driver A output. The driver B output will be at a ...