direncidir

Direncidir is a term used in Turkish to refer to the electrical component commonly known in English as a resistor. It is a passive two-terminal device that provides a defined amount of electrical resistance, measured in ohms, and is used to limit current, divide voltages, and set bias in circuits. The word derives from direnç, meaning resistance, with a suffix that forms an agent noun, and while direncidir appears in some Turkish texts, standard Turkish terminology often uses direnç or rezistör for the same component.

Construction and types

Resistors come in various constructions and materials. Common through‑hole types include carbon composition, carbon film, metal film, metal oxide, and wire‑wound resistors. Surface‑mount versions use thin‑film or thick‑film technology. Resistors are specified by a nominal resistance value, a tolerance range, and a power rating. Some resistors also have a temperature coefficient indicating how resistance changes with temperature. Variants such as potentiometers and trimmers are adjustable resistors used for tuning circuits.

Operation and identification

Resistance is governed by Ohm’s law, R = V/I. In practice, values are indicated by color codes or numerical markings, and standard value sets (E-series) ensure interchangeability. Identification involves reading the value, tolerance, and sometimes the power rating. Electronic design often requires matching resistor types to applications, considering noise, drift, and voltage rating.

Applications and variations

Resistors are used in voltage dividers, signal conditioning, biasing of active devices, and as loads. Variants include thermistors (temperature‑dependent), varistors (surge protection), and rheostats (adjustable resistance). In modern electronics, surface‑mount resistors dominate compact designs, while through‑hole resistors remain common in education and prototyping.

See also

Electrical resistance, Ohm’s law, resistor color code.