Electric materials
How to reduce rectified voltage ripple
The voltage received by the rectifiers is not constant, but pulsating. It consists of constant and variable components. The bigger it is...
Bipolar transistors. Useful for Electrical Engineering: Electrical and Electronics Engineering
The term "bipolar transistor" is related to the fact that two types of charge carriers are used in these transistors: electrons and...
Calculation of alternating current circuits. Useful for electrician: electrical engineering and electronics
Any current that changes in magnitude is alternating. But in practice, alternating current is understood as a current whose law for...
Calculation of three-phase circuits. Useful for electrician: electrical engineering and electronics
A three-phase AC circuit consists of a three-phase power supply, a three-phase consumer, and the communication line wires between them. Can be...
Field effect transistors. Useful for electrician: electrical engineering and electronics
Field-effect (unipolar) transistors are divided into transistors with a control p-n-junction and with an isolated gate. The device of a field-effect transistor with a controll...
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Why is electric current dangerous?