This circuit is from a Radio Electronics from July 1965. The circuit uses components from the time also controlling a servo from the time. The power supply is 28 V.
This digital clock has a traditional configuration with well-known CMOS integrated circuits. The...
This experimental radio was obtained in an old Argentine publication. Germanium transistors are...
This circuit was found in an EDN from the 90s. The circuit employs a double 555 and uses the...