This class B circuit was found in the 1960 Mullard transistor reference manual. Transformers are the critical components. The source is not symmetric.
This circuit was suggested by Popular Elecronics from the 90's. The circuit has high input...
Figure 1 shows a circuit than can be used as time stage in timers, and other applications....
This circuit is from a Popular Electronics from 1993. The magazine is no longer printed, but the...