Electronic Glossary

What’s Voltage?   Voltage, electric potential difference, electric pressure or electric tension is the difference in electric potential between two points, which (in a static electric field) is defined as the work needed per unit of charge to move a …

The level of voltage potential across a normally nonconductive material where current begins to flow in the material or on its surface. This may be accompanied by a sudden electrostatic discharge, which can severely damage the material.

What’s Voltage Divider?   In electronics, a Voltage Divider (also known as a Potential Divider) is a passive linear circuit that produces an output voltage (Vout) that is a fraction of its input voltage (Vin). Voltage division is the result …

What’s Voltage Drop?   Voltage Drop is the decrease of electrical potential along the path of a current flowing in an electrical circuit. Voltage drops in the internal resistance of the source, across conductors, across contacts, and across connectors are …

Voltage Rating is the maximum voltage of a component can withstand without breaking down. Voltage rating figures for components are normally expressed in A.C. RMS. (Alternating Current Root Mean Square) and are written as a figure U0/U (Um) U0 = Rated …

What’s A Voltage Regulator?   Power Regulator is the power supply unit of an electronic device converts incoming power into the desired type (AC-DC or DC-DC) and desired voltage/current characteristics. A voltage regulator is a component of the power supply …

What’s A Voltage Source?   A Voltage Source is a two-terminal device which can maintain a fixed voltage. An Ideal Voltage Source can maintain the fixed voltage independent of the load resistance or the output current. However, a real-world voltage …

What’s A Voltmeter?   A Voltmeter is an instrument used for measuring electric potential difference between two points in an electric circuit. It is connected in parallel. It usually has a high resistance so that it takes negligible current from …

What’s Volume Resistivity in PCB?   Electrical Resistivity (also called Specific Electrical Resistance or Volume Resistivity) (ρ) is a fundamental property of a material that measures how strongly it resists electric current. Its inverse, called Electrical Conductivity, quantifies how well …

What’s VQFN Package?   Very-Thin-Profile Quad Flat No-Lead Package (VQFN) is a near chip-scale plastic encapsulated package. It provides on the package bottom side perimeter pads and also a large die pad, which is typically also soldered to the printed …