Using a 4046 PLL we found this circuit in the December 1989 issue of Radio Electronics magazine. The circuit operates at 220kHz, but this frequency can be changed by changing C3.
This circuit uses components that are still common despite being from 1995 documentation. The circuit can...
This complete single cell protection system is suggested by Linear Technology in its 2005 manual....
This circuit was obtained from American documentation from 1966. It triggers when the two input...