This circuit was obtained from an 80s factory manual. The integrated circuits used are uncommon today, but the diagram is for reference only.
Figure bellow shows how n 4027 can be cascaded to form a divide-by-2. The maximum input frequency...
This circuit is used for cable checking. We found it in the Radio Electronics magazine of December...
Flybacks are no longer misused. However, if the reader wants to recover an old analog television...