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Output Stages and Power Amplifiers
Output Stages and Power Amplifiers

Project: Electronic Cricket
Project: Electronic Cricket

*60129 covers/backs 4.30
*60129 covers/backs 4.30

... The VK-150 monoblock The monoblock version of the VK-75, the VK-150 supplies a prodigious 150 watts of output power. The stereo VK-75 can be fully upgraded to VK-150 monoblock status, maintaining the commitment to a rational upgrade path that has won BAT unprecedented customer loyalty. In addition, ...
Class
Class

... audio, two output devices in "push-pull" must be used (see Class-AB) • Class-AB: Halfway (or partway) between the above two examples (181 to 200 degrees typical) - also requires push-pull operation for audio. The conduction for each output device is shown in Figure 1. ...
슬라이드 1
슬라이드 1

Product Data Sheet: Power Amplifier — Type 2706
Product Data Sheet: Power Amplifier — Type 2706

... The power amplifier has a flat frequency response from 10 Hz to 20 kHz (± 0.5 dB). The power output capability is 75 VA into a 3Ω exciter or resistive load and the maximum voltage gain is 40 dB. This enables the power amplifier to be used in acoustical measurement set-ups, even when third-octave nar ...
LM3886 Amplifier User Manual
LM3886 Amplifier User Manual

... Turn off the power supply if you observe any smokes or hear strange sound coming out from the transformer or board. If there is short circuit, the transformer will be getting very hot shortly. ...
Instruction manual
Instruction manual

... each channel is no lower than 2Ω (for speaker loads connected in parallel, 4Ω + 4Ω = 2Ω… or even… 8Ω + 8Ω + 8Ω + 8Ω = 2Ω) Connect each signal input from mixer or other line level source via the XLR connectors on the rear panel using good quality XLR leads. If the signals are to be cascaded onto othe ...
INTEGRATED AMPLIFIER MIMETISM 15.2 2 x 180 Watts RMS at 8
INTEGRATED AMPLIFIER MIMETISM 15.2 2 x 180 Watts RMS at 8

... The amplification uses the highly acclaimed Hitachi Lateral Mosfets 2SK1058 & 2SJ162 complementary power transistors, in a configuration of two pairs per channel. The input section uses a cascode differential stage for the best performance. Both the pre-driver and the driver stages are based on High ...
Nostalgia
Nostalgia

... difference is very small, but I prefer the Push pull mode with my speakers: they are not to fond of the higher output impedance in the Single ended mode. But I must say, I think the sound from this amplifier is great, independent of which mode I am listening to. ...
Multi-functional Packaged Antennas for Next
Multi-functional Packaged Antennas for Next

Two Stage Transistor Audio Amplifier
Two Stage Transistor Audio Amplifier

... Therefore the feedback circuit must introduce another phase shift of 180°.A transformer can be wired to give this phase change. Each resistor/capacitor combination is designed to give a 60° phase change. Therefore three such RC combinations are used to give the required ...
Low Frequency Receiver Circuit
Low Frequency Receiver Circuit

... the 24 KHz signal from the station in Cutler, Maine, and reject signals at nearby frequencies from other directions. The receiver uses a commercial amplified loop antenna manufactured by “Palomar” with its “Omega” loop. The loop is approximate 25 cm in diameter and can be oriented in any direction. ...
Project: Electronic Cricket
Project: Electronic Cricket

Le 220 DE Control
Le 220 DE Control

... This new preamplifier perpetuates all the values which have established the reputation of the Control "B," adding some refinements in relation to the permanent search for more precise, more stable, more musical components. All circuits are modular. Each printed circuit is dedicated to a unique funct ...
L(µH)= .002l 2.5 log10 4 ld −0.75 XL = 2πfL = 2•3.14
L(µH)= .002l 2.5 log10 4 ld −0.75 XL = 2πfL = 2•3.14

... parasitic circuit capacitances, smaller values of resistors should be used. The circuit should be biased for relatively high collector currents. c. Keep leads short with components close together, while simultaneously isolating input leads from output ones. d. Use 10x scope probes for all high frequ ...
Rarely Asked Questions R A Q ’ s A.
Rarely Asked Questions R A Q ’ s A.

Pulse_meter_project_brl4
Pulse_meter_project_brl4

... – Build a noninverting amplifier with a gain of 11. A high pass filter at 1 radian/sec and low pass at 100 radians/sec. Use power supply voltages of +5 and -5 volts. – Test it by connecting the input to the waveform generator and the output to the scope as shown below. – Set up the waveform generato ...
TIGER ELECTRONIC CO.,LTD
TIGER ELECTRONIC CO.,LTD

... up to 32W into 8ohm load @THD = 10%, V S = ±22V, f = 1KHz. Moreover, theTDA2050 delivers typically 50W music power into 4 ohm load over 1 sec at V S =22.5V, f = 1KHz. The high power and very low harmonic and crossover distortion (THD = 0.05% typ, @ V S = ±22V, P O = 0.1 to 15W, R L =8ohm, f = 100Hz ...
P4.4 Consider the following common source JFET amplifier circuit. Notice... it includes an additional bias resistor, R
P4.4 Consider the following common source JFET amplifier circuit. Notice... it includes an additional bias resistor, R

... P4.4 Consider the following common source JFET amplifier circuit. Notice that it includes an additional bias resistor, R1, compared to the usual self-biasing circuit. Assume that transistor achieves the desired transconductance with VGS = – 0.5 V. However, due to design constraints, the voltage drop ...
Lab 5 – Bias point of a MOSFET Amplifier
Lab 5 – Bias point of a MOSFET Amplifier

... Lab 5 – Bias point of a MOSFET Amplifier Consider the enhancement-type n-channel MOSFET amplifier shown in Fig.1. The MOSFET has a threshold voltage VT = +2V, K = 0.5µnCoxW/L = 1 mA/V2, and a channel-length modulation factor λ=0.01 V−1. 1. Assuming a fixed bias of VGS=+5V, trace the MOSFET output ch ...
DN132 - Fast Current Feedback Amplifiers Tame Low Impedance Loads
DN132 - Fast Current Feedback Amplifiers Tame Low Impedance Loads

... low impedance loads. This Design Note reviews the capabilities of the LT®1206, LT1207 and LT1210 CFAs and addresses some design issues encountered when using them. These CFAs are fast and capable of delivering high levels of current. They can be readily compensated for reactive loads and are fully p ...
Multistage Transistor Amplifiers
Multistage Transistor Amplifiers

... There are two frequencies, called ‘lower cut-off’ and ‘upper cut-off’ frequency at which gain is exactly 70.7% of maximum gain. If these values are represented by f1 and f2 respectively, then ‘bandwidth’ = f1 to f2. For distortion less amplification, it is important that signal frequency range must ...
Keiga KG5230 Subwoofer Amplifier
Keiga KG5230 Subwoofer Amplifier

... The Keiga KG­5230 is a plate Subwoofer Amplifier with Electronic Crossover intended for building powered subwoofer systems. This amp has an adjustable electronic crossover and possesses enough power to deliver excellent bass without added distortion. We are confident this amp will meet the demands o ...
EET-225 Homework #1
EET-225 Homework #1

... redraw the circuit as part of the solution, showing all indicated voltages and currents on the circuit diagram. Box or underline all final answers and show all work (see syllabus for example of homework standards). Use 100 for both Beta DC and Beta AC for all problems in this assignment. 1. Explain ...
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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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