This reflex receiver for the mid-wave range employs germanium transistors of the time. We found it in an English documentation from 1967.
This voltage level-triggered circuit was found in a 1969 Ferranti English documentation. Modern...
Using 555 integrated circuits, this alarm circuit was found in a 90s American documentation. The signal...
Unlike the CIR4620 circuit, the circuit shown in the figure operates by capacitance. This means...