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Glossary of terms you will come across during your Phase 2 training.

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Zama CarburettorFrom their website:

Zama is the world's largest manufacturer of diaphragm carburetors for hand-held outdoor power products. Read More...


Clarence ZenerClarence Melvin Zener (1905–1993) was the American physicist who first described the property concerning the breakdown of electrical insulators. These findings were later exploited by Bell Labs in the development of the Zener diode, which was duly named after him. Zener was a theoretical physicist with a background in mathematics who conducted research in a wide range of subjects including superconductivity, metallurgy, ferromagnetism, elasticity, fracture mechanics, diffusion and, geometric programming.

Zener was born in Indianapolis, Indiana and earned his PhD in physics at Harvard in 1929. His thesis was entitled Quantum Mechanics of the Formation of Certain Types of Diatomic Molecules.

Zener was known both for his dislike of experimental work and for preferring to work on practical problems within the arena of applied physics, in which he was very insightful. Although he had a reputation of being very successful in these endeavors, he apparently considered himself as being less qualified to work on purely theoretical physics problems.

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A Zener diode behaves like an ordinary diode up to a certain point. In other words, it acts as a one way electrical valve that allows electricity to flow in one direction only. It does this up to a certain point. However, when voltage acting against the normal flow rises to a certain point, the Zener collapses and conducts freely in both directions. It will continue to do that until the voltage acting against the Zener drops below a given value. Once this happens, the Zener again behaves like an ordinary diode.

Zener diode symbol.

Because of this quality, the Zener is especially useful in voltage regulation circuits.

Non-ferrous metal with excellent resistance to corrosion. Often used to cover and protect mild steel-for example in corrugated roof sheets.
Zinc was one of the two metals used by Alessandro Volta in his voltaic pile. The other metal he used was copper. These two dissimilar metals were arranged in a pile, and separated by leather discs soaked in sulphuric acid to produce what was essentially the first battery.

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