This old amplifying stage was found in radios and small amplifiers of the time. The circuit is from Mullard's transistor reference manual.
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...