The circuit we presented was found in an English magazine from 1973. The complementary pair of power transistors AD161 and AD162 was popular at the time, allowing the construction of good amplifiers up to about 5 or 6 W. If the reader finds these transistors in the scrap, he can use it in the presented circuit, exchanging TR1 for a BC548 and TR2 for a 2N2222 or BD135. The source is 12 V to 15 V with at least 1 A.
| Clique na imagem para ampliar |
