Watchdog circuit uses ac triggering

A dc-triggered reset of a watchdog circuit is prone to failure. If the watchdog program hangs up, then the reset signal becomes activated continuously, and the microprocessor has no way to escape the situation. This simple solution uses an ac trigger to r

Watchdog circuit uses leftover gates

extremely simple watchdog circuti to be used with microcontrollers.

Watchdog timer reboots PCs

watchdog timer reboot the computer if it runs astray, uses a PIC16C84 µC to provide the watchdog function

Universal watchdog fully controls µ Preset