This circuit with TTL compatible output was found in a 1968 US documentation. The circuit is powered by 5 V and the frequency can be changed by changing the crystal.
This circuit was suggested by General Electric in 1969 documentation. It provides a maximum output of...
This circuit was obtained from a Popular Electronics of 1994. The magazine no longer exists in its...
Found in Radio Electronics from the 90s, this circuit uses components from that time. However, it...