1/17/2016

TDA7294 Amplifier Circuits

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TDA7294 Audio Amplifier Circuits

TDA7294 is a monolithic integrated circuit in Multiwatt15 package, with high output power (up to 100W) intended for use as audio class AB amplifier in Hi-Fi field applications (Home Stereo, self powered loudspeakers, Topclass TV). Thanks to the wide voltage range and to the high out current capability it is able to supply the highest power into both 4W and 8W loads even in presence of poor supply regulation, with high Supply Voltage Rejection.

TDA7294 Amplifier Circuits
TDA7294 Amplifier Circuits

TDA7294 Amplifier Circuits
TDA7294 Amplifier Circuits pcb

TDA7294 Amplifier Circuits layoput
TDA7294 Amplifier Circuits layout

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200W Hybrid Audio Amplifier Circuit

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200W Hybrid Audio Amplifier Circuit - 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.

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

200W Hybrid Audio Amplifier Circuit
200W Hybrid Audio Amplifier Circuit

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