This approximately 100 W PMPO module was found in a technical publication in 1997. The circuit must use 2-ohm speakers and the T1 transformer has a low impedance (or low voltage) and secondary winding of approximately 600 ohms. T2 has 102 + 102 turns of wire 21 in a transformer core with the dimensions indicated in the figure. Output transistors must be mounted on heatsinks. The current drained by the circuit is of the order of 7 A.
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