This circuit is from a Ferranti publication of 1968. The circuit generates a signal according to the crystal. The transistor may be a modern equivalent.
This circuit came out in a Popular Electronics from December 1995. It is a double T configuration that...
This circuit was obtained in an 1975 English publication. It is a voltage regulator circuit for...
This circuit was found in the October 1994 issue of Electronics Now magazine. The 4046 PLL is not...