Cara belajar merakit power amplifier
Of course this paper is not based on scientific research, but only my personal view because I often find this amplifier schematics and kits in electronics stores in Indonesia not only in Jakarta. This is not a sophisticated amplifier, but a simple amplifier with a pretty good performance. This amplifier has been there long before I knew about electronics. You can find this kit in all corners of Indonesia with many version.
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Sign in to make your opinion count. Sign in 28 5 Don't like this video? Sign in 6 Loading Rating is available when the video has been rented. This feature is not available right now. Please try again later. Autoplay When autoplay is enabled, a suggested video will automatically play next. Up next Pembuatan box power amplifier - Duration: Agung Setiadi , views Membuat box speaker line array double 10 in - Duration: CrazySub 27, views Cara buat hardcase power tahan gores - Duration: Sottong 44, views Proses pembuatan box speaker line array di bengkel aanksound - Duration: Sign in to add this to Watch Later Add to Loading playlists From Wikipedia, the free encyclopedia Jump to navigation Jump to search This article is about electronic amplifiers.
For other uses, see Amplifier disambiguation. A watt stereo audio amplifier used in home component audio systems in the s. Amplification means increasing the amplitude voltage or current of a time-varying signal by a given factor, as shown here.
It is a two-port electronic circuit that uses electric power from a power supply to increase the amplitude of a signal applied to its input terminals, producing a proportionally greater amplitude signal at its output. The amount of amplification provided by an amplifier is measured by its gain: the ratio of output voltage, current, or power to input. An amplifier is a circuit that has a power gain greater than one. Amplification is fundamental to modern electronics, and amplifiers are widely used in almost all electronic equipment.
Amplifiers can be categorized in different ways. One is by the frequency of the electronic signal being amplified. For example, 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 GHz, and servo amplifiers and instrumentation amplifiers may work with very low frequencies down to direct current. Amplifiers can also be categorized by their physical placement in the signal chain; a preamplifier may precede other signal processing stages, for example.
Today most amplifiers use transistors. Vacuum tubes were used in almost all amplifiers until the s—s when the transistor, invented in , replaced them. Today, most amplifiers use transistors, but vacuum tubes continue to be used in some applications. De Forest's prototype audio amplifier of The Audion triode vacuum tube had a voltage gain of about 5, providing a total gain of approximately for this three-stage amplifier.
The development of audio communication technology in form of the telephone, first patented in , created the need to increase the amplitude of electrical signals to extend the transmission of signals over increasingly long distances. In telegraphy, this problem had been solved with intermediate devices at stations that replenished the dissipated energy by operating a signal recorder and transmitter back-to-back, forming a relay, so that a local energy source at each intermediate station powered the next leg of transmission.
For duplex transmission, i. Varley for telegraphic transmission. Duplex transmission was essential for telephony and the problem was not satisfactorily solved until , when H. Shreeve of the American Telephone and Telegraph Company improved existing attempts at constructing a telephone repeater consisting of back-to-back carbon-granule transmitter and electrodynamic receiver pairs.
After the turn of the century it was found that negative resistance mercury lamps could amplify, and were also tried in repeaters, with little success. The first practical version of such devices was the Audion triode, invented in by Lee De Forest,[7][8][9] which led to the first amplifiers around For 50 years virtually all consumer electronic devices used vacuum tubes.
Early tube amplifiers often had positive feedback regeneration , which could increase gain but also make the amplifier unstable and prone to oscillation. Much of the mathematical theory of amplifiers was developed at Bell Telephone Laboratories during the s to s. Power control circuitry used magnetic amplifiers until the latter half of the twentieth century when power semiconductor devices became more economical, with higher operating speeds.
The old Shreeve electroacoustic carbon repeaters were used in adjustable amplifiers in telephone subscriber sets for the hearing impaired until the transistor provided smaller and higher quality amplifiers in the s.
Today, use of vacuum tubes is limited for some high power applications, such as radio transmitters. Beginning in the s, more and more transistors were connected on a single chip thereby creating higher scales of integration small-scale, medium-scale, large-scale, etc. Many amplifiers commercially available today are based on integrated circuits.
For special purposes, other active elements have been used. For example, in the early days of the satellite communication, parametric amplifiers were used. The core circuit was a diode whose capacitance was changed by an RF signal created locally. Under certain conditions, this RF signal provided energy that was modulated by the extremely weak satellite signal received at the earth station.
Advances in digital electronics since the late 20th century provided new alternatives to the traditional linear-gain amplifiers by using digital switching to vary the pulse-shape of fixed amplitude signals, resulting in devices such as the Class-D amplifier.
Ideal[edit] The four types of dependent source—control variable on left, output variable on rightIn principle, an amplifier is an electrical two-port network that produces a signal at the output port that is a replica of the signal applied to the input port, but increased in magnitude. The input port can be idealized as either being a voltage input, which takes no current, with the output proportional to the voltage across the port; or a current input, with no voltage across it, in which the output is proportional to the current through the port.
The output port can be idealized as being either a dependent voltage source, with zero source resistance and its output voltage dependent on the input; or a dependent current source, with infinite source resistance and the output current dependent on the input.
Combinations of these choices lead to four types of ideal amplifiers. For any particular circuit, a small-signal analysis is often used to find the actual impedance. Rather than dealing with voltage or current individually, they ideally couple with an input or output impedance matched to the transmission line impedance, that is, match ratios of voltage to current.
Many real RF amplifiers come close to this ideal. Although, for a given appropriate source and load impedance, RF amplifiers can be characterized as amplifying voltage or current, they fundamentally are amplifying power. The gain may be specified as the ratio of output voltage to input voltage voltage gain , output power to input power power gain , or some combination of current, voltage, and power.
In many cases the property of the output that varies is dependent on the same property of the input, making the gain unitless though often expressed in decibels dB. Most amplifiers are designed to be linear. That is, they provide constant gain for any normal input level and output signal.
If an amplifier's gain is not linear, the output signal can become distorted. There are, however, cases where variable gain is useful. Certain signal processing applications use exponential gain amplifiers. Every amplifier includes at least one active device, such as a vacuum tube or transistor. Negative feedback[edit]Negative feedback is a technique used in most modern amplifiers to improve bandwidth and distortion and control gain.
In a negative feedback amplifier part of the output is fed back and added to the input in opposite phase, subtracting from the input. The main effect is to reduce the overall gain of the system. However, any unwanted signals introduced by the amplifier, such as distortion are also fed back. Since they are not part of the original input, they are added to the input in opposite phase, subtracting them from the input. In this way, negative feedback also reduces nonlinearity, distortion and other errors introduced by the amplifier.
Large amounts of negative feedback can reduce errors to the point that the response of the amplifier itself becomes almost irrelevant as long as it has a large gain, and the output performance of the system the 'closed loop performance' is defined entirely by the components in the feedback loop.
This technique is particularly used with operational amplifiers op-amps. With negative feedback, distortion can typically be reduced to 0.
Noise, even crossover distortion, can be practically eliminated. Negative feedback also compensates for changing temperatures, and degrading or nonlinear components in the gain stage, but any change or nonlinearity in the components in the feedback loop will affect the output. Indeed, the ability of the feedback loop to define the output is used to make active filter circuits.
Another advantage of negative feedback is that it extends the bandwidth of the amplifier. The concept of feedback is used in operational amplifiers to precisely define gain, bandwidth, and other parameters entirely based on the components in the feedback loop.
Negative feedback can be applied at each stage of an amplifier to stabilize the operating point of active devices against minor changes in power-supply voltage or device characteristics. Some feedback, positive or negative, is unavoidable and often undesirable—introduced, for example, by parasitic elements, such as inherent capacitance between input and output of devices such as transistors, and capacitive coupling of external wiring.
Excessive frequency-dependent positive feedback can produce parasitic oscillation and turn an amplifier into an oscillator. Categories[edit]Active devices[edit]All amplifiers include some form of active device: this is the device that does the actual amplification. The active device can be a vacuum tube, discrete solid state component, such as a single transistor, or part of an integrated circuit, as in an op-amp.
Transistor amplifiers or solid state amplifiers are the most common type of amplifier in use today. A transistor is used as the active element. The gain of the amplifier is determined by the properties of the transistor itself as well as the circuit it is contained within. Applications are numerous, some common examples are audio amplifiers in a home stereo or public address system, RF high power generation for semiconductor equipment, to RF and microwave applications such as radio transmitters.
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Speaker Aktif Lebih Published: Duration: Definition: sd View: Like: 18 Dislike: 0 Favorite: 0 Comment: 3 How to make home subwoofer amplifier Assembly of the amplifier for the subwoofer. Driving amplifier for the subwoofer includes the TDA chip and two transistors. Through this scheme, it achieved an increase of output power Design ideas for living room. Published: Duration: Definition: hd View: Like: Dislike: 56 Favorite: 0 Comment: cara membuat subwoofer aktif 6 inch video ini mengenai cara membuat subwoofer aktif.. These are the Cohesive designs.
Skema Driver Power Ampli Lapangan
Speaker Aktif Lebih Published: Duration: Definition: sd View: Like: 18 Dislike: 0 Favorite: 0 Comment: 3 How to make home subwoofer amplifier Assembly of the amplifier for the subwoofer. Driving amplifier for the subwoofer includes the TDA chip and two transistors. Through this scheme, it achieved an increase of output power Design ideas for living room. Published: Duration: Definition: hd View: Like: Dislike: 56 Favorite: 0 Comment: cara membuat subwoofer aktif 6 inch video ini mengenai cara membuat subwoofer aktif.. These are the Cohesive designs.
Cara merakit power ampli 600 watt
Well it was so nice and crowded session, from 10 am to 10 pm. I was sooo tired to judge in all those sessions except session III where I need to receive some phone calls. Enjoy some pics here. So many Pre Amp, so many design!
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Speaker Aktif Lebih Published: Duration: Definition: sd View: Like: Dislike: 93 Favorite: 0 Comment: Membuat Subwoofer aktif 8inch yang pulen Ini adalah cara membuat Subwoofer aktif 8 inch ysng bass nya pulen, sedikit modifikasi ringan agar bass tidak boomy. Can be converted as a soundbar too! By just a few wire re-arrangements and you've got a DIY soundbar! These are the Cohesive designs. Built left, right and center channel and they are absolutely incredible.
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Speaker Aktif Lebih Published: Duration: Definition: sd View: Like: 18 Dislike: 0 Favorite: 0 Comment: 3 How to make home subwoofer amplifier Assembly of the amplifier for the subwoofer. Driving amplifier for the subwoofer includes the TDA chip and two transistors. Through this scheme, it achieved an increase of output power Design ideas for living room. Published: Duration: Definition: hd View: Like: Dislike: 56 Favorite: 0 Comment: cara membuat subwoofer aktif 6 inch video ini mengenai cara membuat subwoofer aktif.. These are the Cohesive designs. Built left, right and center channel and they are absolutely incredible.
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Big Bass. Published: Duration: Definition: sd View: Like: 44 Dislike: 19 Favorite: 0 Comment: 44 How to make home subwoofer amplifier Assembly of the amplifier for the subwoofer. Driving amplifier for the subwoofer includes the TDA chip and two transistors. Through this scheme, it achieved an increase of output power Published: Duration: Definition: hd View: Like: Dislike: Favorite: 0 Comment: Cara merakit atau menyambung gigabass di speaker aktip Untuk menghasilkann suara bass Yang besar maka kita bisa menambahkan gigabass atau turbo bass di speaker aktip kita.
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Power guttural wat klo di modit gitu suaranya ke low ato gimn om. Tolong dijelaskan. Biar nanti saya ikut2n mencobanya. Mohon penjelasannya bos.
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