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 an Electronics Now from the 90's. The integrated regulator circuit and...
This circuit was found in a 1967 Raytheon optoelectronics manual. The circuit uses tubes. | Clique...
This circuit was taken from the 1967 General Electric SCR Manual. The circuit can use virtually any...