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This IC is inexpensive and easily available in the market. ic tda 7388 The author’s prototype, which gives 14W output, is shown in Fig. data pin ic tda 7377 1 The circuit diagram of the audio amplifier is shown in Fig 2 It comprises TDA2030A audio amplifier (IC1), two 1N4007 rectifier diodes (D1 and D2), four resistors (R1 through R4), nine capacitors (C1 through C9), 15