TA8256BH bassed 6 watts 3 channel audio amplifier Diagram Circuit

Using the TA8256BH audio amplifier IC can be designed a very simple 3 channel audio power amplifier for audio applications that require a small power .
This IC provides an output power of 6 watts per channel (at VCC = 20 V, f = 1 kHz, THD = 10%, RL = 8 Ω).

TA8256BH audio amplifier project is suitable for power amplifier of TV and home Stereo.
Some important build in functions of these audio circuit project , based on the TA8256BH are : audio muting circuit , thermal shut down protection circuit, over voltage protection circuit .
TA8256BH power amplifier can operate over a wide range input voltage from 10 to 30 volts .

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4 Channel Audio Mixer Circuit Diagram

A 4 channel audio mixer that requires very few electronic components can be built using this electronic scheme based on SSM2024 chip. To obtain a small offset and a high rejection, the four inputs of the 4 channel audio mixer circuit must have an impedance of 200 ohms to the ground. These impedances are resistances obtained with R5-R8, which are part of the voltage divider at each input. With values of the components from this scheme nominal input signal is 1 V (0 dBV). At this level, distortions are about 1%, and at lower levels do not exceed 0.3%. Maximum amplification is obtained for a control current of 500 uA, in which case the input control voltage is slightly increased to 0.5 V (result we need a maximum control voltage of 5.5 V). The amplifier output currents are summed by simply connecting the output pins. The signal / noise of the mixer is about 90 dB and the bandwidth of the order of 130 kHz. SSM2024 integrative work satisfactorily with a supply voltage between 9 V and 18 V, but best results are obtained at ± 15 V.

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