This circuit was suggested by a 1967 General Electric manual. The waveforms of the generated signals are shown next to the diagram. Equivalent modern SCRs can be used.
This solar powered circuit was found in a 1991 documentation. The transistor is a general purpose...
This amplifier was found in a Radio Electronics of the 90s. The circuit uses unusual operational...
This power converter or inverter was found in a 1980s documentation. Transistors should be fitted...