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200W Audio Amplifier Circuit

Circuit description:
Connecting two TDA2030 thru cheap power transistors we can create a amplifier wich can deliver a higher power. With the components value from the schematic the total amplifier gain is 32 dB. The speaker can be 2 ohm instead of 4 ohm if we use the TIP transistors. TDA 2030 is produced by SGS Ates and is a complete audio amplifier. AB class of the final amplifier cand deliver up to 14W on 4 ohm at a +-14V power supply. With a proper designed power supply this audio amplifier can output 200W.
Circuit diagram:

Part list IC1, Ic2 TDA 2030T1, T3 = BD 250, TIP 36T2,T4 = BD 249, TIP 35D1 … D4 = 1N4001
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Subwoofer Circuit Diagram

Circuit Descrition The acoustic spectrum is extended by very low frequencies 20Iz and reaches as the 20000Iz in high frequencies. In the low frequencies is degraded the sense of direction. This reason us leads to the utilization speaker for the attribution of very low frequencies. The manufacture that to you we propose distinguishes these frequencies, in order to him we lead to the corresponding amplifier. The acoustic filters are met in various points in the sound systems. The knownest application they are the filters baxandal for regulating tone low and high frequencies and filters crossover where the acoustic region is separated in subareas, in order to it leads the corresponding loudspeakers. The application that to you we propose is a simple filter of region that limits the acoustic region (20-20000Hz) in the region 20-100Hz.
With the manufacture that to you we propose you can make a active filter in order to you lead a loudspeaker of very low frequencies. With this you will plac…

100W MOSFET power amplifier

Circuit Description: MOSFET power amplifier circuit based on IRFP240 and IRFP9240 MOSFETs is shown here. The amplifier operates from a +45/-45 V DC dual supply and can deliver 100 watt rms into an 8 ohm speaker and 160 watt rms into a 4 ohm speaker. This Hi-Fi amplifier circuit is suitable for a lot applications like general purpose amplifier, guitar amplifier, keyboard amplifier. The amplifier can be also used as a sub woofer amplifier but a subwoofer filter stage has to be added before the input stage. The amplifier has a low distortion of 0.1%, a damping factor greater than 200, input sensitivity of 1.2V and the bandwidth is from 4Hz to 4 KHz.
Circuit Features: Assemble the circuit on a good quality PCB.Use a +45/-45 V DC, 3A dual supply for powering the circuit.Power supply voltage must not exceed +55/-55 V DC.Before connecting the speaker, check the zero signal output voltage of the amplifier and in any case it should not be higher than 50mV. If it is higher than 50mV, check the ci…

300W Subwoofer Power Amplifier

This is an amplifier circuit that is formed from a transistor amplifier miraculous. This circuit is used in the speaker subwoofer with 300W maximum power on each side. To apply it, can be used in the room that is not too large, like the car. And the voltage needed between 25 to 42 Volt DC. Searches related to 300W Subwoofer Power Amplifier
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Mosfet Amplifier Circuit for Subwoofer 400W

Power amp 400W IRFP448 Circuit
Amplifier circuit today,We would like to show you for the MOSFET 400 watt amplifier is amplifier on my kW shares the same circuit and basic PCB layout.
The only real difference is the number of output devices to the device.
We have using The IRFP448 design while the MOSFET amplifier 14 O / P devices.
These amplifiers can be used for virtually any application that requires high performance, low use Noise, distortion and excellent sound quality. Examples would be subwoofer amplifier should FOH stage
Amplifiers, surround a canal a very powerful sound amplifier, etc.
The 400W MOSFET-amplifier has four key stages of amplification. We are looking to start any Phase appropriate detail.
The bias and buffer stage
As the name suggests All Q ,C and ZD the Bias and buffer phases. Its main goal is to provide a stable MOSFET Gates and offset voltage and the voltage buffer amplifier stage of the High Resource capacity. What would have without the phase response…

HIFI Headphone Amplifier Circuit Diagram

HIFI Headphone Amplifier Circuit Diagram This 1-watt amplifier leads itself par excellence for usa as driver for a low impedance headphone or as output stage in a hi-fi preamplifier driving an active loudspeaker. The schematic of this amplifier consists of an opamp type LF356 and a push-pull transistor output stage. Low-pass filter R1/C2 at the input limits the slew rateof the input signal. The fixed quiescent current of 30 mA draw by the output transistors, and set by diodes D1…D4 in conjuction with emitter resistors R7 and R8, ensures very low crossover distorsion.

Feedback resitors R3 and R4 fix the gain at about 15dB. The consequent overall distortion with a 3dB bandwidth from 10 Hz to 30 Hz is only 0.1 percent.
The amplifier delivers a maxiumum powder of 1 watt into 8 ohm for an input signal of about 500 mV rms. High-impedance headphones and 4 ohm loudspeakers may also be connected withoutdetriment.
The amplifier is best build on the printed circuit boar shonw bellow. The two tra…

Audio Power Amplifier IC LM Series

Audio Power Amplifier 170W LM4651 The combination of the LM4651 driver IC and the LM4652 power MOSFET Class D power amplifier IC provides a high efficiency amplifier solution, suitable for self-powered speakers, subwoofers and quality car boosters.

The LM 4651 is a fully integrated conventional pulse width modulator (PWM) driver, containing undervoltage, short circuit, overmodulation, and thermal shutdown protection circuitry. The IC features a standby function which shuts down the pulse width modulation, minimizing supply current.

The LM 4652 is a fully integrated H-bridge Power Mosfet IC in a TO220 power package. The IC has a built in temperature sensor to alert the LM4651 when the die temperature exceeds the threshold limit.

Used together, the LM4651 and LM4652 form a simple, compact, efficient, high quality power audio amplifier solution complete with protection, normally seen only in Class AB amplifiers.



The maximum efficiency of this circuit is 85% at 125W with a standby attenua…

Subwoofer Filter Circuit Diagram

General Description        This subwoofer active filter circuit is a 24 dB octave filter with a Bessel character and cutoff frequency of 200 Hz. So, if you are interested in experimenting with audio circuits in subwoofer range, this circuit is for you. In subwoofer range, all audio frequencies below 200 Hz can be fed to a single speaker box since the human directional perception of sound diminishes at this frequency range. The normal stereo signals above 200 Hz can be fed to 2 satellite speakers. How does the subwoofer filter works: A1 and A2 buffer the signals coming from right and left channels. Opamp combinations A2/A4 and A9/A10 function as the highpass filters. The outputs are then connected to the final amplifiers of the battelite boxes. Signals from both channels are fed to A5. Opamps A6/A7 function as the lowpassfilter, A8 as the output amplifier for the subwoofer signal. The signal level can be balanced between the subwoofer and the satellite lines. The power needed for this …

Car Subwoofer Amplifier Circuit Diagram

Circuit Description:
This unit is intended to be connected to an existing car stereo amplifier, adding the often required extra “punch” to the music by driving a subwoofer. As very low frequencies are omnidirectional, a single amplifier is necessary to drive this dedicated loudspeaker. The power amplifier used is a good and cheap BTL (Bridge Tied Load) 13 pin IC made by Philips (now NXP Semiconductors) requiring a very low parts count and capable of delivering about 22W into a 4 Ohm load at the standard car battery voltage of 14.4V. The stereo signals coming from the line outputs of the car radio amplifier are mixed at the input and, after the Level Control, the signal enters the buffer IC1A and can be phase reversed by means of SW1. This control can be useful to allow the subwoofer to be in phase with the loudspeakers of the existing car radio. Then, a 12dB/octave variable frequency Low Pass filter built around IC1B, Q1 and related components follows, allowing to adjust precisely the…

Subwoofer Filter Circuit Board

Cheap car subwoofer filter circuit description:      This subwoofer filter set Suitable for use with a great car audio system. Since this circuit is designed to operate with a 12 volt DC power. But if you put it to use with a home stereo, It do not have any rules. This subwoofer circuit set is designed to has a cut off frequencies of 200 Hz. If you are not satisfied, you can change the C6, C7, C8, new, follow the table below.       The left cannel input signal is entered pass through capacitors C1, C3 are the output Signal to the original circuit. (Or rear left in the car). And the right cannel input signal is entered to C2, C4 to the original circuit. (Or rear right in the car). Two resistors R1 and R2 will be mixer audio signal the left channel and the right channel both together. Then next wire connects to C5. This capacitor is also know as the coupling capacitor to inverting input of M5218A (IC1a). The VR1 serves as a set of IC1a gain with much or less as you want.
     The output s…

LM4702 Amplifier Circuit Diagram

LM4702 general description:     The LM4702 is a high fidelity audio power amplifier driver designed for demanding consumer and pro-audio applications. Amplifier output power may be scaled by changing the supply voltage and number of output devices. The LM4702 is capable of delivering in excess of 300 watts per channel single ended into an 8 ohm load in the presence of 10% high line headroom and 20% supply regulation. The LM4702 includes thermal shut down circuitry that activates when the die temperature exceeds 150°C. The LM4702's mute function, when activated, mutes the input drive signal and forces the amplifier output to a quiescent state. The LM4702 is available in 3 grades that span a wide range of applications and performance levels. The LM4702C is targeted at high volume applications. The LM4702B includes a higher voltage rating along – LM4702A (1) (in development): with the tighter specifications. The LM4702A(1) (in ±20V to ±100V development) is the premium part with the h…

TDA7265 subwoofer circuit diagram

TDA7265 description:      The TDA7265 is class AB dual Audio Amplifier assembled in the multi watt package specially designed for high quality sounds application as Hi-Fi music centers and stereo TV sets
TDA7265 features:
WIDE SUPPLY VOLTAGE RANGE (UP TO±25V ABS MAX.)SPLIT SUPPLYHIGH OUTPUT POWER 25 + 25W @ THD =10%, RL = 8Ω, VS = +20VNO POP AT TURN-ON/OFFMUTE (POP FREE)STAND-BY FEATURE (LOW Iq)SHORT CIRCUIT PROTECTIONTHERMAL OVERLOAD PROTECTIONTDA7265 amplifier circuit:
Searches related to TDA7265tda7265 amplifier circuittda7265 voltagetda7265 subwoofer circuit diagramtda7265 pcb layouttda7265 equivalenttda7265 single supplytda7265 power supplytda7265 amp circuitThe TDA7265 is class AB Dual Audio Power amplifier assembled in the @ Multiwatt package, specially designed for high quality sound application as Hi-Fi

TDA2030 Audio Amplifier 1 x40W

TDA2030 general description:    Although there are a number of hybrid output modules on the market, very few of them combine compactness with reasonable price and good performance. One of these few is SGS's used in the present amplifier. The design of the amplifier is straightforward: a power op-amp followed by two output transistors. The audio signal is applied to the non-inverting input of power op-amp IC1 TDA2030 via socket K1 and capacitor C1. The supply current to the IC varies in accordance with the input signal. Consequently, there will be a similarly varying voltage drop across resistors R6, R7, R8, and R9 since these are in the supply lines to the op-amp. As long as the current is lower than about 1A, the voltage drop across the resistors will be insufficient to switch on transistors T1 and T2. This means that outputs up to 2 W into 4 ohm are provided entirely by the op-amp. Once the output current exceeds a level of 1A, the transistors are on and contribute to the power …

LM1875 AUDIO AMPLIFIER 20W

LM1875general description:

The LM1875 is a monolithic power amplifier offering very low distortion and high quality performance for consumer audio applications. The LM1875 delivers 20 watts into a 4Ω or 8Ω load on ±25V supplies. Using an 8Ω load and ±30V supplies, over 30 watts of power may be delivered. The amplifier is designed to operate with a minimum of external components. Device overload protection consists of both internal current limit and thermal shutdown.The LM1875 design takes advantage of advanced circuit techniques and processing to achieve extremely low distortion levels even at high output power levels. Other outstanding features include high gain, fast slew rate and a wide power bandwidth, large output voltage swing, high current capability, and a very wide supply range. The amplifier is internally compensated and stable for gains of 10 or greater.

LM1875 amplifier circuit:LM1875 power supply diagram: LM1875 pcb layout: LM1875 project review

100W Guitar Amplifier Schematic

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TDA8947J Audio Amplifier 29W

TDA8947Jgeneral description: The TDA8947J contains four identical audio power amplifiers. The TDA8947J can be used as: four Single-Ended (SE) channels with a fixed gain of 26 dB, two times Bridge-Tied Load (BTL) channels with a fixed gain of 32 dB or two times SE channels (26 dB gain) plus one BTL channel (32 dB gain) operating as a 2.1 system The TDA8947J comes in a 17-pin Dil-Bent-Sil (DBS) power package. The TDA8947J is pin compatible with the TDA8944AJ and TDA8946AJ. The TDA8947J contains a unique protection circuit that is solely based on multiple temperature measurements inside the chip. This gives maximum output power for all supply voltages and load conditions with no unnecessary audio holes. Almost any supply voltage and load impedance combination can be made as long as thermal boundary

conditions (number of channels used, external heatsink and ambient temperature) allow it.

TDA8947J features:
SE: 1 W to 25 W, BTL: 4 W to 50 W operation possibility (2.1 system)Soft clippingStandby a…

LX1720 Audio Amplifier 2x20W

LX1720 general description:The LX1720 controller IC contains the necessary functions to implement a stereo Class-D audio amplifier. A Class-D amplifier is a "switching" amplifier that converts a low-level, analog, audio input signal into a highpower, pulse-width modulated (PWM) output. The switching frequency is much higher than the audio band which allows high frequency out-of-band components to be removed with a simple LC filter. The LX1720 generates a PWM output by controlling external MOSFET's connected in a full-bridge configuration. Because the MOSFET's are either full "on" or full "off", their power dissipation is minimal allowing maximum power to be delivered to the speaker.
LX1720 Circuit:

TDA8922 Audio Amplifier 2x25W

TDA8922general description:
The TDA8922 is a high efficiency class-D audio power amplifier with very low dissipation. The typical output power is 2 × 25 W. The device is available in the HSOP24 power package with a small internal heatsink and in the DBS23P through-hole power package. Depending on the supply voltage and load conditions, a very small or even no external heatsink is required. The amplifier operates over a wide supply voltage range from ±12.5 to ±30 V and consumes a very low quiescent current.

TDA8922 features:
High efficiency (∼90%)Operating supply voltage from ±12.5 to ±30 VVery low quiescent currentLow distortionUsable as a stereo Single-Ended (SE) amplifier or as amono amplifier in Bridge-Tied Load (BTL)Fixed gain of 30 dB in Single-Ended (SE) and 36 dB inBridge-Tied Load (BTL)High output powerGood ripple rejectionInternal switching frequency can be overruled by an external clockNo switch-on or switch-off plop noiseShort-circuit proof across load and to supply linesElect…