The 4046 PLL is uncommon these days. This circuit was found in the August 1994 issue of Electronics Now magazine. It operates from 0 to 1.4 kHz with voltage adjustment on pin 9.

The 4046 PLL is uncommon these days. This circuit was found in the August 1994 issue of Electronics Now magazine. It operates from 0 to 1.4 kHz with voltage adjustment on pin 9.