This an old commercial receiver found in a year 1958 magazine. The circuit uses some transformer available that timer and the transistors are germanium types. The circuit is intended to receive MW stations.
Figure bellow shows how n flip-flops can be associated to perform a shift register. Data is...
This simple digital frequency meter using CMOS circuits reaches 5 MHz frequency. Input signals are...
This circuit was originally recommended to operate with the emitter of the previous circuit but...