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.
This high quality audio preamplifier uses three bipolar transistor and is powered from 24 V...
This circuit for analog video signals was found in the August 1970 issue of Radio Electronics...
This oscillator can generate 2 to 10 MHz signals and was found in an American 1980s documentation. The...