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 egg timer has been found in an English magazine that no longer exists in 1982. The...
We found this circuit in the March 1995 issue of Electronics Now magazine. The circuit has a...
SAM D5x and E5x MCUs Provide Powerful Performance and Enhanced Security Features CHANDLER, Ariz.,...