What is magnetism

December 12, 2016 0

Almost 20 centuries ago, an ore called magnetite was found and was called “lodestone” or leading stone. Name magnetism derived from the name of the…

Amplifiers

December 12, 2016 0

Knowing what a diode is, or how a triod works is of little use unless you have some practical knowledge of how it can be…

Diode and Triode

December 12, 2016 0

When a diode is connected in series with other circuit components, current can flow in only one dirction in all of these components. This characteristic…

Primary Cell

October 14, 2016 0

Primary Cell: When dissimilar materials like zinc and carbon(or copper used in place of carbon)were immersed in a bath of acid solution(suphuric acid diluted in…

Ni-Cad cells

October 14, 2016 0

Introduction Nickel-Cadmium batteries can save much time and money when they are used to replace other non-chargeable dry batteries. They must however, be treated in…