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Description
Flashcards by Tomas Lopez, updated more than 1 year ago
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Created by Tomas Lopez
over 7 years ago
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Copied by Tomas Lopez
over 7 years ago
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| Question | Answer |
| Ground | It's a connection to the earth. |
| Unjoined Wires | They are drawn with hump symbols to make it clear they aren't conected |
| Joined Wires | They are connected to each other and are indicated by a dark circle and are called joined wires. |
| Cell | It supplies electrical current. |
| Battery | It has two or more cells. The large terminal is positive. |
| AC Power Supply | It provides alternative current. Alternative current constantly changes direction at a specific frequency. |
| DC Power Supply | It provides direct current. Direct current always flows in one direction. |
| Amplifier | It isn’t actually an electronic component but instead is a complex circuit. The block diagram symbol shows where an amplifier circuit would be connected. Amplifier circuits are used to magnify power, current, or voltage. |
| Transitor | It amplifies current. |
| Fuse | It's a safety device that blows (melts) if the current flowing through it exceeds a specified value. |
| Motor | It converts electricity into kinetic energy (motion). |
| Inductor | It resembles a coil. It consists of a conductor, such as wire, usually wound into a coil. When a current flows through it, energy is stored temporarily in a magnetic field in the coil. When the current flowing through an Inductor changes, the time-varying magnetic field induces a voltage in the conductor which opposes the change in current that created it. They are used by transformers and relays (to trigger a switch). |
| Resistor | It restricts the flow of a electric current. |
| Preset Variable Resistor | A device that operates with a small screwdriver or similar tool; it’s designed to be set when the circuit is made and then left without further adjustment. |
| Rheostat | A type of variable resistor with two contacts, usually used to control current. |
| Capacitor | It stores electric charge and releases it at particular intervals. They’re used with resistors in timing circuits because it takes time for a capacitor to fill with charge. |
| Polarized Capacitor | It must be connected the correct way in a circuit. |
| Variable Capacitor | They are used most often in radio tuning circuits. |
| Diode | It allows electricity to flow in only one direction. Diodes are the electrical version of a valve. |
| Relay | It's an electrically operated switch that may operate multiple switches at one time. It uses an Inductor (coil). |
| Light-Emitting Diode (LED) | It emits light when an electric current passes through them. |
| Lighting Lamp | It converts electrical energy to light, such as in a light bulb or automobile headlight. |
| Indicator Light | It converts electricity into a warning light. |
| Antenna | It's a device designed to receive and/or transmit radio signals |
| Push Switch | It allows current to flow only when the button is pressed, such as a doorbell. |
| On/Off Switch | It allows current to flow only when it's in the closed (on) position. |
| Push to Break Switch | It's supposed to be used when the circuit is CLOSED or it's flowing electricity. It opens they circuit or stop the current. |
| Two Way Switch | It directs the flow of current to one of two routes, according to its position. |
| Dual On/Off Switch | It's often used to switch main electricity because it can isolate both the live and neutral connections. |
| Potentiometer | A type of variable resistor with three contacts that’s used to control voltage. |
| Heater | It converts electricity into heat |
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