Table of circuit components. Component

Table of circuit components

Circuit sym- bol Component function Wires joined провода соединены

Wires connect components and pass current from one part of a circuit to another.

Wires not joined провода не соеди- нены

Cell гальванический элемент, батарея

A cell supplies electrical en- ergy. Battery батарея

A battery is two or more cells joined together. DC supply источник постоян- ного тока

Supplies electrical energy (di- rect current). AC supply источник перемен- ного тока

Supplies electrical energy (al- ternating current). Fuse плавкий предохра- нитель

A safety device which will melt if the current flowing through it exceeds a specified value. Transformer трансформатор

Transformers are used to step up (increase) and step down (decrease) AC voltages. Lamp (lighting) лампа освещения

A lamp providing illumina- tion.

Lamp (indicator)	сигнальная лампа	A lamp which is an indicator, for example a warning light on a car dashboard.
Motor	мотор	A motor converts electrical energy to kinetic energy (mo- tion).
Coil	катушка	A coil of wire creates a mag- netic field when current pass- es through it.
On-off switch	двухпозиционный переключатель (включено- выключено)	Current flows only when the switch is closed (on).
2-way switch	переключатель на два направления	A 2-way switch directs the flow of current to one of two routes according to its posi- tion.
Relay	реле	An electrically operated switch. NO = Normally Open COM = Common NC = Normally Closed
Resistor	резистор	Resistors limit the flow of cur- rent.
Variable re- sistor	переменный рези- стор	Variable resistors with two contacts are used to control current.
Capacitor (unpolarized)	неполярный кон- денсатор	Capacitors store electric charge.
Capacitor (polarized)	полярный конден- сатор	These capacitors have large capacitance.
Variable ca- pacitor	конденсатор пере- менной емкости	A variable capacitor is used in a radio tuner.
Diode	диод	Diodes allow current to flow in one direction only.
LED (Light Emitting Di- ode)	светодиод	LEDs convert electrical ener- gy to light.