This 1965 Philips circuit uses old company transistors like the BFY51 and BFY50. The circuit is powered by 12 V and the power gain is 8.9 dB.
This circuit, from an old publication from the 70s, can be assembled with a 2N2646 unijunction...
In the figure we show how two diodes can be used to simulate the center tap of a push-pull driver step....
The circuit presented was obtained from an Electronics Now magazine from February 1995. The...