This is the power step of the previous circuit. Output transistors must be mounted on good heat sinks. The circuit is from documentation from the 60s.
This circuit was found in an American telecommunications documentation from the 1980s. The circuit...
This circuit is from a 1970 publication. The time constant is given by 1.3R x C where R is the...
This 18 V x 300 mA power supply was found in a 1969 documentation. The integrated circuit is...