60-100 Watt Audio Amplifier Circuit in Sound Project
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Here is a 60 to 100 Watt Amplifiers circuit,
the electronic designer was developed for the (relatively) easy to build at a reasonable price. It has a better performance (ie: musical quality) than the default STK module amps, in practically every mass market stereo receiver manufactured today. As I am behind this thing, it was necessary, because I A100 WPC amplifier and didn’t want the money. Thus, I left, I was in the store.
The design is largely the norm, and I am sure that there are commercial entities that are similar. For my knowlwdge, this is not an exact copy of a business, or am I aware that the patents on the topology. Manufacturers to learn: I am aware that many improvements and adjustments can be, but the idea was to keep things simple, and should be possible to climb aboard and have patience, and not a botched job.
The input stage is an op amp lf351 majority of open-loop gain, as well as stabilizes the quiescent current principle DC. This feeds a passage refers to the stage, the voltage swing on the (-) rail. The stage is a transconductance Darlington, improving frerqency high linearity. The 2SC2344 has a relatively high base-collector capacity utilization, the voltage-dependent. The MPSA42 shows that low-Z and a C (OB) of a few PF actually flooded 33pF pole-splitting methods of fishing cap. The phase is determined by the load 2SA1011 active (current source) is approximately 20 mA. This stage is characterized by 2N3094 approximately 70 mA, at worst.
The output is a parallel Darlington with the results. Even if it is “out with” one, if only 8-ohm easy to drive the load, it is not recommended. The use of multiple devices increases the ability to drive a reactive loads (which attracts a great tension while the waveform to zero and gives a high voltage and current in the transistor at a time), the amplifier gives a higher damping and reduces the maximum current of each transistor is to provide edge (remember to obtain an output transistor drops the current increases).
The compensation is two poles and a zero. OP-Amp machine and bait fishing through the CAP 33pf and 470 Ohm resistance MPSA42 means to dominate. (33pF to be multiplied by the stage win). The 22 pf capacitor provides feedback compensation, and it is the stage version tranconductance production. In this way, the phase delay caused by the output transistors are not considered high-frequency feedback. This closed-loop pole intorduces fishery limits high frequency response. The two compensation capacitors must be of type-1 creamic (NPO) or sequins money – zero voltage coefficient.
The amplifier is designed to provide a 2-channel + / – 55-volt non-supply, then to + / – 48 volts at full load. He used a 40-0-40 volt, 5 amps toroidal transformer, a bridge rectifier and 10,000 uf filter CAP per page. If a standard EI transformer is used, a 6-Ampère nominal unit. With this power, produces 100 watts continuous, both channels driven into 8 ohms of resistance, without a break. Dynamic headroom is a database and a half. For high discharge voltages ranging up to + / – 62 volts can be used, without circuit
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