Electronic Glossary

What Is a Rheostat?   A Rheostat is a variable resistor which is used to control current. They are able to vary the resistance in a circuit without interruption. The construction is very similar to the construction of potentiometer. It …

Rigid PCB is a kind of printed circuit board, which is solid, unbendable and inflexible printed circuit board, like FR4 PCB, Rogers PCB, PTFE PCB, IMS PCB (aluminum core, copper core, ceramic core), and other PCB build with rigid materials. …

Selective circuit of resistors and inductors that offers little or no opposition to certain frequencies while blocking or attenuating other frequencies.

RL circuit with an output proportionate to the integral of the input signal.

RMS value of an AC sine wave is 0.707 times the peak value. This is the effective value of an AC sine wave. The rms value of a sine wave is the value of a DC voltage that would produce …

An exposed copper area generally attached to a rack used in electroplating, usually to provide a more uniform current density on plated parts. Thieves are intended to absorb the unevenly distributed current on parts, thereby assuring that the parts will …

Return on Investment (ROI) is a performance measure used to evaluate the efficiency of an investment or compare the efficiency of a number of different investments. ROI tries to directly measure the amount of return on a particular investment, relative …

Read-only memory (ROM) is a type of non-volatile memory used in computers and other electronic devices. Data stored in ROM cannot be electronically modified after the manufacture of the memory device. Read-only memory is useful for storing software that is …

What Is a Rotary Switch?   A Rotary Switch is an electromechanical switch operated by rotation that has a rotating shaft connected to one terminal capable of making or breaking a connection to one or more other terminals.   A …

Holes with a copper burr around either the entry or exit hole and that lack a smooth barrel.