This circuit was found in a Signetics documentation from the 1980s. The integrated is a PLL and the SCR is a general purpose type The pitch frequency is given by R1 and C1 as formula next to the diagram.
In the figure we give the set-reset flip-flop configuration in which two Norton amplifiers are used in...
This circuit was found in the component manual itself. The frequency can be changed and the power...
May 2017 - These new Digital to Analog converters from Texas Instruments, available from Mouser...