This circuit is from a 1967 documentation. It consists of a sensor for memories used at the time. It can be made with modern equivalent transistors. Note the 4 V symmetrical power source.
This circuit generates 50, 100 and 200 Hz signals from a 3.2768 MHz crystal and has outputs...
This circuit allows frequencies between 1.8 and 30 MHz to pass. Data for the coils is provided next to...
The automatic heating system sensor is a diode placed in a waterproof tube as shown in the figure....