3H Electronics 7a

What is a LED?

• An input device

• An output device

• A processing device

Which component is used to detect a change in light?

• Thermistor

• LDR

• Transistor

• Switch

Name the component for the circuit symbol in the diagram above.

• Transistor

• Resistor

• Thyristor

• LED

What are the 3 legs of a transistor called?

• Base, Electrode, Commiter

• Bridge, Collector, Extruder

• Base, Collector, Emitter

• Brake, Collection, Emit

Which component is used to detect a change in temperature?

• Thermistor

• LDR

• Transistor

• Switch

Name the component for the circuit symbol in the diagram above.

• LDR

• Thermistor

• Transistor

• LED

Thyristor stays ("latches") on and remains in that state until the circuit is _____________ .

State two ways to reset a thyristor.

• disconnect the power supply for a moment

• remove thyristor from the circuit

• connect a switch in series with the thyristor

• use a second switch to momentarily bypass the thyristor

A ______________ and a transistor can be used in a time-delay circuit to switch on/off a bulb after a time delay.

What does IC stands for?

• Intelligent Card

• Integrated Circuit

• Integrated Card

• Intelligent Circuit