Analog “Watchdog” Timer
![](https://www.simplecircuitdiagram.com/wp-content/uploads/2010/11/Watchdog”-Timer-Circuit-481x198.gif)
The circuit on the following figure is not for power supply management, but serves to prevent lock-up in processor based systems. If the system misses an instruction due to transient hardware or software events, this could be occur. A predictable cessation of pulse events somewhere in the system is caused by such a processor hang-up. This circuit issues a reset […]
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