This power source for Gas Laser was obtained in a 90’s Electronic Design. The circuit uses a switched regulator from the time. Equivalents can be used.
This resistive sensor was found in a 1969 US documentation. The circuit uses transistors of the...
This 5-range current measurement circuit was found in the September 1989 issue of Radio...
This oscillator with crystal for overtone operation was found in an old American documentation. The coil...