Systems and methods for providing self-powered timed power isolation circuit

A method for operating a circuit, comprising:

• supplying regulated power from an input power regulator to a passive energy storage device, a transient event detector, a timer circuit, and at least one circuit component;
• detecting, by the transient event detector, an occurrence of a transient event;
• responsive to the detecting, performing timer operations by the timer circuit to change a signal on a line connecting the timer circuit to the at least one circuit component;
• using the signal to (i) cause supply of the regulated power to be discontinued to the passive energy storage device, the transient event detector, the timer circuit, and the at least one circuit component, and (ii) cause power or energy storage devices of the at least one circuit component to be discharged to ground;
• supplying power from the passive energy storage device to the timer circuit during the transient event;
• and
• discontinuing the timer operations upon expiration of a pre-specified duration so that the regulated power is once again supplied to the passive energy storage device, the transient event detector, the timer circuit, and the at least one circuit component.