Electronic component identification Flashcards
Identify and have knowledge of electronic components and symbols
This is a battery. What does it do?
A battery is a collection of cells, used to provide power to a circuit.
Name the component.
Battery
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Battery
This is a variable resistor. What does it do?
A Variable Resistor is a resistor whose resistance can be changed. It can be used to control the current in a circuit.
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Variable Resistor
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Ammeter
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PNP Transistor
This is a PNP Transistor. What does it do?
A PNP Transistor is an electronic switch. It can be used as part of an amplifier to boost the power of an output device.
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PNP Transistor
This is an ammeter. What is it used for?
An ammeter is measuring instrument used to measure the electric current in a circuit.
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Ammeter
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Antenna
This is an antenna. What does it do?
An antenna converts electrical signal into radio waves and vice versa.
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Bell
This is a bell.
A bell is an electrical signalling device.
This is a buzzer. What does it do?
A buzzer turns electricity into sound. It makes simple buzzing noises only.
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Buzzer
This is a capacitor. What does it do?
A capacitor is used to store charge. It can be used in conjunction with a resistor to provide a simple timing circuit.
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Capacitor
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Polarised Capacitor
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Capacitor
This is the symbol for an earthing point in a circuit. What is an earth?
It is a connection to the ground or earth in a circuit. This can be for several reasons such as to protect the user if the circuit insulation failed.
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Earth
This is a fuse. What does it do?
A fuse is a special type of resistor that will burn out if the current goes above its rated level. It is used to protect circuits from too much current.
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Fuse
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Fuse
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Heating Element
This is a lamp. What does it do?
A lamp turns electricity into light.
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Lamp/Bulb
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Lamp
This is a Light Dependant Resistor (LDR). What does it do?
A Light Dependant Resistor (LDR) is used for sensing light. It is a type of resistor where the resistance increases as the amount of light increases.
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Light Dependant Resistor (LDR)
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Light Dependant Resistor (LDR)
This is a Light Emitting Diode (LED). What does it do?
A Light Emitting Diode (LED) converts electricity to light and only allows the electricity to pass through one way. It uses much less electricity than a bulb.
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Light Emitting Diode (LED)
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Light Emitting Diode (LED)
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Microphone
This is a loudspeaker. What does it do?
A loudspeaker turns electricity into sound.
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Loudspeaker
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Loudspeaker
This is a motor. What does it do?
A motor turns electricity into circular movement.
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Motor
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Motor
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Photodiode
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PNP Phototransistor
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Polarised Capacitor
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Potentiometer with moveable contact
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Potentiometer with moveable contact
This is a potentiometer. What does it do?
A potentiometer is a 3 terminal resistor. If only 2 terminals are used it acts as a variable resistor. If all 3 are used it acts as a voltage divider. It is often used as a volume control. Also known as a pot.
This is a resistor. What does it do?
A resistor can be used to control the amount of current in a circuit or to protect other components.
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Resistor
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Resistor
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Semi Conductor Diode
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Semi Conductor Diode
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Switch
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A thyristor.
This is a thyristor. What does it do in a circuit?
A thyristor is like a transistor. When a small current passes through the gate leg, it allows a larger current to flow from the anode to the cathode leg. This continues after the current into the gate has stopped. It is used in latching circuits.
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Voltmeter
This is a switch (latching). What does it do?
A latching switch can be used to turn a circuit on. It stays on until turned off.
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Push to make switch
This is a push to make switch. What does it do?
A push to make switch can be used to turn the circuit on or as a contact sensor. It only stays on whilst pressed.
This is a diode. What does it do?
A diode only allows electricity to flow in one direction. It can be used to protect components.
Name the component.
Diode
This is a relay. What does it do?
A relay can be used as part of a low powered circuit to turn on a high powered circuit.
Name the component.
Relay
This is an integrated circuit. What is it used for?
There are lots of different types of integrated circuits, ranging from timers to logic gates to programmable chips. They are used for amplifiers, counters, timers, processors and oscillators.
Name the component.
Integrated Circuit
What is a component?
A component is a part used to make an assembly.
What is an input component?
Input components activate the circuit. They include switches and sensors.
What is a process component?
A process component controls what the circuit does in response to the input.
What is an output component?
Output components are a range of devices that turn electricity into light, sound or movement.
This is a thermistor. What is it used for?
A thermistor is used for temperature sensing. It is a type of resistor where the resistance increases as the temperature increases.
Name the component.
Thermistor
