We found this circuit in an Electronic Design. The main integrated circuit is the 4017. The frequencies are determined by the RC circuits as well as the duration of the generated pulse train.
The critical component of this circuit is the transformar. We found it in an 1980s documentation....
This PLL circuit includes a small amplification stage. We found it in the December 1989 Radio...
January 2017 - Mouser Electronics is introducing new, ultra-thin Vishay Displays OLED modules. The new...