Found on an 80's Elektor, this circuit uses common components, being the diode a general purpose germanium. The coils select the frequency range of the indicator that reaches 60 MHz.
This circuit is from an old American publication. It divides a 40 to 60 MHz TTL signal by integer...
The SN72741 integrated circuit is nothing more than the version of Texas Instruments of the known...
Found elsewhere in this section, but from other sources, this circuit is from a 1964 Electronic...