Diode rectifier characteristic. In the reverse direction, the diode rectifier will ultimately break down. The breakdown voltage is normally well in excess of the turn on voltage-the scales on the diagram have been altered (compressed) in the reverse direction to illustrate that reverse breakdown occurs.
Common kingsnakes are beneficial for the ecosystem. As predators, they help keep numbers of rodents, frogs and other snakes like rattlesnakes and cottonmouths in check. They are eaten by larger snakes and predatory birds and mammals. They also get some parasites from the group apicomplexans.ommon kingsnakes are eaten by alligators in Florida, larger snakes, hawks, raccoons, striped skunks, and Virginia opossums. They defend themselves from predators by hissing, striking, making a striking pose shaped like an S, biting, and flying.
Sometimes, cobras can't avoid a fight, either with a predator like the mongoose or his prey. To deal with the dangers of his environment, the cobra is equipped with deadly venom that he emits from his fangs. In some cobras, like the king cobra, the venom is strong enough to bring down an animal as large as an elephant.arding Off Predators. When a would-be predator tries to pick a fight with a cobra, the snake stands up for himself. Cobras are known as hooded snakes, as they are equipped with hoods around their heads that they can flare out at will.