We found this circuit in the October 1978 issue of Radio Electronics magazine. The magazine article describes its assembly. The circuit is a 6-digit circuit using components from the time.
Indicated for automotive applications, this circuit was found in the November 1980 issue of Radio...
This circuit was found in the February 1993 Radio Electronics magazine. The frequency depends on...
The circuit, shown in the figure, is suggested by Texas Instruments, making use of one. Frequency is...