Circuits Flashcards

0
Q

What is VR1 and what does it do

A

Variable resistor 1

Sensitivity of circuit

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1
Q

Name the 7 components in a circuit

A
L.E.D 
9V battery 
Variable resistor
LDR 
330 resistor 
1k resistor 
Transistor
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2
Q

How does the circuit work

A

Low light level is senses by the LDR which sends a signal to transistor
The transistor switches on the LED

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3
Q

What should u do to prepare for soldering

A
Switch on iron 
Let it heat up 
Clean with wet sponge 
Tin the solder 
With metal wire
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4
Q

How to make solder joint

A

Heat joint 4-5 secs

Feed solder to joint

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