This circuit was found in a 1969 Mullard documentation. Used transistors can be replaced with modern equivalents. Output transistors may be BD135 and 136 with heatsinks.
January 2017 - Mouser Electronics is introducing new, ultra-thin Vishay Displays OLED modules. The new...
This circuit is from an American 1967 documentation and can be implemented with modern equivalent...
Line voltage compensation (CB8816E) This circuit for the alternating current line (AC line) was...