Found in a 1968 US publication, this circuit can operate on any power grid. The thickness of the wire depends on the load current.
This circuit of a 1969 Electronic Design uses RTL logic. The setting can be adapted to TTL. The...
This was the original title given by the publication of the 80s in which we found it. Similar...
This crystal oscillator circuit is indicated for use as a frequency reference in the calibration...