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Operational Amplifier
Operational Amplifier

... The term operational amplifier or ”op-amp” refers to a class of high-gain DC coupled amplifiers with two inputs and a single output. The modern integrated circuit version is typified by the famous 741 op-amp. Some of the general characteristics of the IC version are: • High gain, on the order of a m ...
OPA1013 Precision, Single-Supply DUAL OPERATIONAL AMPLIFIER FEATURES
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... power applications. It is laser trimmed for low offset voltage and drift, greatly reducing the large errors common with LM324-type op amps. Input offset current is also trimmed to reduce errors in high impedance applications. ...
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... 7. Draw the small signal model of common drain amplifier? 8. Draw the source follower amplifier circuit. 9. List the applications of MOSFET amplifiers. 10. Compare the characteristics of three MOSFET amplifier configurations. 11. Draw the small signal equivalent JFET common source circuit. 12. How d ...
10 Series - Rutherford Controls
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A Power Re-Use Technique for Improved Efficiency Robert Langridge,
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... the VSWR also rises, up to a maximum of nearly 2:1. The high VSWR at high input powers could create a limitation on the cancellation of the signals that appear at the antenna, creating unwanted distortion. However, the antenna hybrid itself provides an additional 3 dB of isolation, and a circulator ...
A Design of CMOS Class-AB Differential Log-Companding Amplifier Kobkaew Opasjumruskit , Apisak Worapishet
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... differ from what we expected. Nevertheless, the proposed circuit has differential output that can finally eliminate the offset value in the output current. As mentioned in the previous section, the gain of this amplifier is affected by the value of Vgain. The gain of amplifier respect to Vgain is sh ...
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Analog multiplier using operational amplifiers
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Heathkit GC-1A - Orange County (California) Amateur Radio Club
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... at idle). T his tap allows the user to strap the am ps to 150W mono mode without putting the outputs in push-pull as is often done in am ps where the supply or output stage is voltage limited. T he switch to mono is accomplished through a fairly complex arrangem ent of molex connectors and wires whi ...
technical information
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... The TA2022 is a power (high current) amplifier that operates at relatively high switching frequencies. The output of the amplifier switches between the VPP and VNN at high speeds while driving large currents. This high-frequency digital signal is passed through an LC low-pass filter to recover the a ...
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... reference voltages are generated out side of the prototype circuit. The large number of pipeline stages using the common reference voltages increases the capacitive load in the reference nodes. To guarantee that the reference does not limit the settling speed, its output impedance has to be very low ...
A/E Specification - Bosch Security Systems
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... unit, which in turn shall be connected to an audio and control network, based on fiber optical hybrid cabling, capable of redundant loop operation. Via the multichannel interface, the amplifier shall be able to receive audio and operational control signals from the network and report its status to t ...
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... result is often a soft fault for a band error. Phil Salas, AD5X, sent me a cable to connect the RS-232 jack on my TS-590S to the CAT/AUX jack on the 600S — problem solved. The amplifier follows the transceiver instantly at band changes. Remote monitoring and control are possible using a computer con ...
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... When using a triac input signal from an external controller, a Triac Adapter Kit must be ordered with the DRN4. Connect the black common (-) wire from the power source, and the black common wire on the triac adapter to the incoming power lead. Suggestion: Clip off a short section of the power wire t ...
Gravity Well - Control Voltage
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... Latitude: Affects the positive half of the input waveform. This input has an attenuator and a bias control for presetting the level. Longitude: Affects the negative half of the waveform. This input has an attenuator and a bias control for presetting the level. Eccentricity: Affects both halves of th ...
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Amplifier



An amplifier, electronic amplifier or (informally) amp is an electronic device that increases the power of a signal.It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In this sense, an amplifier modulates the output of the power supply to make the output signal stronger than the input signal. An amplifier is effectively the opposite of an attenuator: while an amplifier provides gain, an attenuator provides loss.An amplifier can either be a separate piece of equipment or an electrical circuit within another device. The ability to amplify is fundamental to modern electronics, and amplifiers are extremely widely used in almost all electronic equipment. The types of amplifiers can be categorized in different ways. One is by the frequency of the electronic signal being amplified; audio amplifiers amplify signals in the audio (sound) range of less than 20 kHz, RF amplifiers amplify frequencies in the radio frequency range between 20 kHz and 300 GHz. Another is which quantity, voltage or current is being amplified; amplifiers can be divided into voltage amplifiers, current amplifiers, transconductance amplifiers, and transresistance amplifiers. A further distinction is whether the output is a linear or nonlinear representation of the input. Amplifiers can also be categorized by their physical placement in the signal chain.The first practical electronic device that amplified was the Audion (triode) vacuum tube, invented in 1906 by Lee De Forest, which led to the first amplifiers. The terms ""amplifier"" and ""amplification"" (from the Latin amplificare, 'to enlarge or expand') were first used for this new capability around 1915 when triodes became widespread. For the next 50 years, vacuum tubes were the only devices that could amplify. All amplifiers used them until the 1960s, when transistors appeared. Most amplifiers today use transistors, though tube amplifiers are still produced.
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