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 circuit was found in Raytheon's 1967 documentation. The circuit uses an operating of the era,...
We find this circuit in an American 1980s documentation. The circuit can still be assembled...
This resistive sensor was found in a 1969 US documentation. The circuit uses transistors of the...