200 Watts Amplifier using TDA2030

TDA 2030 is produced by SGS Ates and is a complete audio amplifier. Class AB amplifier to deliver final cand 14 watts into 4 ohms, a source of +-14V power. Connecting two TDA2030 through cheap power transistors that can create an amplifier that can deliver a higher power. With the value of the components of the overall scheme of the amplifier gain is 32 dB. The speaker may be 2 ohms instead of 4 ohms, if we use the transistors TIP. With a properly designed power supply that can output audio amplifier 200W.

Active components:
IC1, Ic2 TDA 2030
T1, T3 = BD 250, TIP 36
T2,T4 = BD 249, TIP 35
D1 … D4 = 1N4001

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30W Audio Amplifier based TDA7296

The audio power amplifier of this scheme is a power amplifier based on TDA7296 chip. The audio amplifier is a class AB amplifier, which can be used in high fidelity (stereo, speakers powered car, TV five stars). The maximum output power obtained with TDA7296 amplifier circuit is about 60 watts. Thanks to the wide range of voltages and high power output capability is able to provide the highest power in 4 and 8 ohm impedance load.

The TDA7296 is provided with both stand-by and mute two independently driven by CMOS logic input pin compatible and optimized to avoid any kind of uncontrolled audible transient at the output. The maximum power of 60 watts is obtained with a power supply around 29V VS = ± 8 ohm load impedance, VS = ± 24V, 6-ohm load impedance, VS = ± 22V 4-ohm impedance loading.

The 60-watt maximum power delivery of the audio circuit is obtained with a 10% total harmonic distortion. Use a power supply around VS = ± 24V, 8 ohm load impedance, VS = ± 21V, 6-ohm load impedance, VS = ± 18V 4-ohm load impedance of the maximum power delivered by the amplifier is 30W, but the total harmonic distortion is about 0.5%. Key features of this amplifier are: high output power, high voltage 30V operation, the mute and standby functions, thermal shutdown and short circuit protection.

Soure : electroniq.net

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10 Watts Mosfet Audio Amplifier

Here is a 10W MOSFET audio amplifier circuit, sound that only requires a single source. Single railway material rarely used in power amplifiers class-B. However, for low power applications like this is very thin. Actually I have this circuit a old cassette player is still working and republish as it is. The BD512 and BD522 power MOSFETs is obsolete now and you can use any other power MOSFET game instead of them.

Transistors Q1 and Q2 are connected as a Darlington pair works as a preamp. R3 preset controls the quiescent current, while R2 provides. Output is coupled to the speakers through capacitor C4. Capacitor C5 is the power supply filter and C2 is the input DC decoupling capacitor.

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IC TA8215 based on 15W Car Audio Amplifier

IC TA8215 based on 15W Car Audio Amplifier

This is the circuit of the amplifier channel stereo BTL 15W audio power IC based on TA 8215 developed by Toshiba. In this circuit, power amplifier, TA 8215 two ICs are used. This is for the acquisition of four channels has two channels of each IC. TA 8215 is an integrated circuit with the stages of power amplifier and preamplifier integrated inside.

The power required for this amplifier is only 12 V DC. The maximum output power of each channel of delivery of this amplifier is 15 W at 4 ohm speaker and a so called 4 x 15 W power amplifier.

R1 R2 form a voltage divider that attenuates the input signal of 24 dB. Given the 50dB gain of the chip, leaving the total gain of 26dB, a little more than enough to fully saturate the amplifier when the sound card works at maximum output. DC C1 preamp input blocks. C2 is the ground return of the feedback circuit. These two capacitors have to be in the relationship is shown, in order to remove the switch clicks when turning the circuit on and off. The output pins 15 and 16 are connected directly to the speaker, while C7, R6, R7 and C8 provide adequate loading phase change to avoid high frequency instability.

The power supply is decoupled with a capacitor of 100uF rather small. That's enough to decouple the higher frequencies and lower frequencies anyway large capacitors in power supply from PC are fine. The pins 10 and 17 supply power amplifiers, while the pin 9 provides power to the previous stages. This power is filtered by C3. The control pin 4 to shut down power amplifier, an option is not used here, so it is tied to 12V. Pin 1 is an entry of silence also is not used and left open.

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TDA1010 - 10W Audio Amplifier Circuit

The audio amplifier circuit is a class B amplifier audio power with a TDA1010. It is easy to build and has only a few external components. The circuit is designed with a short circuit and thermal protection. You can drive loads as low as 1.6 ohms and is capable of 10 watts deliveringover from an external 16 V DC.

The TDA1010 is a monolithic integrated circuit class B audio amplifier in one place-9 in line (SIL) plastic container. The range of voltage across and the flexibility of the IC to be an attractive proposition for turntables and tape recorders with outputs of up to 10 W.

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